In the previous chapter we have critically considered the text of Pliny
bearing upon the question whether the ancient Greeks and Romans were
acquainted with the art of casting. Let us now proceed to some general
considerations as to the probability that this art was known and
practiced by them.
In the first place, the distinction between modeling and casting must
be constantly kept in mind, and care must be taken not to confound
the two totally different terms “mould” and “model.” That gypsum was
used in modeling there can be no doubt, and it is quite possible that
it may have been used to fill prepared moulds of stone, terra cotta,
or other materials for the making of ectypa. There is indeed no proof
of this; but as we know that moulds were made and cut in stone, into
which clay was pressed, to be then withdrawn and baked for ectypa with
which to adorn houses, so also it is possible that gypsum may have
been used for this purpose. This, however, is merely a supposition,
and the fact that none of them have ever been found in plaster renders
it highly improbable. In these ectypa of clay, as well as in the
impressions taken from them, there are no indications of anything like
what we call a piece-mould, composed of many sections; and whenever
there are under-cuttings in the ectypa, which could not be withdrawn
from the mould and which would fasten them into it, these parts of the
ectypa are invariably worked by hand. For instance, in the collection
of Mr. Fol in Rome there are several terra cotta figures of low relief
evidently stamped from a mould, which are appliqué, or fastened
subsequently to the cista of which they form a part. The sutures under
each figure are still visible, but they are all corrected and worked
by hand after being withdrawn, and have evidently suffered in being
removed from the mould. In the same collection there are several
specimens of plaster reliefs, with such deep under-cuttings that they
could not have been withdrawn from a single piece-mould; but all these
under-cuttings are freely worked by hand, showing plainly that they
were not in the stamp or mould; and it is also clear that they were
afterwards worked over with fluid plaster, the edges and flats of
which have not been rounded, but left as it was freely laid on by hand.
It is probable that in these cases plaster was pressed into a mould in
the same manner as clay, and afterwards worked up and finished. But the
slightest examination will show clearly that if a mould was employed to
give a general form to them, it certainly was not a piece-mould; and
that they are not castings in the modern sense of the word, but only
rude stamps.
These are the only specimens, however, so far as we are aware, of
any such use of plaster for low-relief ornaments,—the ectypa which
have been preserved to us being invariably of baked clay. If plaster
had been used for this purpose, we should expect to find casts in the
interior of houses or tombs, where they would be protected from the
weather, and where they could be easily introduced into the walls and
ceilings. But though elaborately ornamented designs in relief, worked
in gypsum, are to be found still fresh and uninjured on the ancient
tombs and baths, all of them were freely and rapidly modeled by hand
while the gypsum was still fresh and plastic, and not a single specimen
of cast plaster has been found. It is but a few years since the tombs
in the Via Latina were opened, and in two of them the ceilings, divided
into compartments, were covered with rich and fantastic designs of
flowers, fruit, arabesques, groups of imaginary animals, sea-nymphs,
and human figures; the designs varying in each compartment, and all
modeled in the plaster with remarkable vivacity and spirit: not one
of them was cast. So in the houses at Pompeii, not a vestige of a
figure or ornament cast in plaster has ever been found,—nor a mould in
plaster; and when one considers that, being completely protected, they
would naturally have survived as well as other far more fragile and
destructible objects which have been preserved, the evidence is almost
absolute that they never could have existed there. If so, it is in the
highest degree probable that they existed nowhere. It would seem plain,
then, that even the first, simplest, and most natural processes of
casting in gypsum were unknown to the ancients, for no other process is
so easy and simple as to fill a flat mould with plaster and then remove
it, provided there are no under-cuttings. In doing this, however, there
is a slight practical difficulty if the mould is in one piece, as the
least under-cutting would render it impossible to remove the cast
without injury or breakage. Indeed, though there were no under-cutting,
it would at least be very difficult to remove the plaster from a mould
in one piece. Clay would be removed with far greater ease because of
its pliancy, and any cracks or imperfections could be at once remedied;
add to this that baked clay is one of the most enduring of materials,
and we have the probable reasons why the ancients used it instead of
gypsum. But whatever may have been their reasons, it is perfectly
clear that they did use clay; and we have no evidence that they ever
used plaster.
This use of gypsum to take impressions from flat moulds is suggested
by Theophrastus, it would seem, in his treatise on mineralogy,[18]
in which he says that plaster “seems better than other materials to
receive impressions.” The term ἀπόμαγμα means nothing more than an
impression, such as one makes in wax from a seal ring, and such as is
common still in plaster; it is to this use that he seems to refer. He
does not say, however, that gypsum was really put to this use; and if
it were, it would advance us little in our inquiry, since any material
which is soft will receive an impression, whether it be bread, pitch,
clay, wax, or any similar substance.
But the step from this simple process of stamping in a shallow mould
to casting from life or from the round is enormous. The difficulties
are multiplied a hundred-fold. It is no longer a simple operation,
but a nice and complicated one. The part to be cast must first be
oiled or soaped, then covered with plaster of about the consistency
of rich cream, then divided into sections while the material is still
tender, so as to enable the mould to be withdrawn part by part without
breakage, then allowed to set, then removed, oiled or soaped on the
interior surface, the parts all properly replaced, fluid plaster poured
into the mould,—and finally, after the cast is set, the mould must be
carefully removed by a hammer and chisel. This is an elaborate process
as applied to an arm or a hand, but when applied to a living face it
is not only difficult but disagreeable, and unless due care be used it
may be dangerous; and after all a cast from the face is hard, forced,
and unnatural in its character and impression, however skillfully it
may be done, and can only serve the sculptor as the basis of his work.
Yet if the common interpretation of the passage in Pliny be accurate,
this is the process which was invented and practiced by Lysistratus,
and by means of which he made portraits. _Credat Judæus!_ With all our
knowledge and practice, we do not find this to answer in our own time.
But to cast from a statue in clay is still more difficult and
complicated; there the extremest care and nicety are required in making
the proper divisions, in extracting the clay and irons, recommitting
the sections, and breaking off the outer shell of the mould. In fact,
the modern process is so complicated that no one can see it without
wondering how it ever came to be so thought out and perfected, or
without being convinced that it must have been slowly arrived at by
many steps and many failures.
That statues were modeled in plaster by the ancients there is no doubt.
Pausanias mentions several;[19] and Spartianus[20] also speaks of
“Three Victories” in plaster, with palms in their hands, erected at
one of the games,—and says that on one of the days of the Circensian
games when according to common custom they were erected, the central
one on which the name of Severus was inscribed, and which bore a globe,
was thrown down by a gust of wind from the podium, and that another
bearing the name of Geta on it also fell and was shattered to pieces.
Firmicus[21] also relates that after Zagreus, son of Jupiter, was slain
by the Titans, his body was cut to pieces and thrown into a cauldron,
from which Minerva rescued the heart and carried it to Jupiter. He then
gave it to Semele, who resuscitated Zagreus, and Jupiter afterwards
preserved his likeness in plaster,—“Ex gypso plastico opere perfecit.”
Mr. Perkins cites all these instances, and says: “They authorize us
to believe that the Greeks and Romans practiced casting in plaster.”
But in saying this he altogether overlooks the very plain distinction
between the two entirely different operations of casting and modeling.
We know that they modeled in plaster; the only question is whether they
_cast_ in that material. The term for casting, as we have stated, was
“fundere,” and is always used when real casting in brass or other metal
is spoken of; but nowhere is the term “fundere” applied to any work
in gypsum. “Ars fundendi æro” is constantly spoken of,—“ars fundendi
gypso” never. Besides, the very phrase “ex gypso plastico opere
perfecit” is at variance with casting. The words “plastico” and “opere”
mean modeling, and nothing else.
But throughout this paper by Mr. Perkins these two completely distinct
processes are constantly confounded with each other. It suffices for
him to find a statement in an ancient writer that anything is made in
plaster, or even an allusion to a plaster statue, and at once he jumps
to the conclusion that the statue was necessarily cast, and not shapen
or modeled.
“It remains for us now,” he says, “to establish by undeniable proof
how little foundation there is for the opinion of those who pretend
that the ancients did not make use of plaster for casting, supporting
their opinion on the complete absence of statues and statuettes
in plaster, or fragments of any kind found in excavations, when
nevertheless thousands of objects of the frailest kind are found, such
as stuccoes, vases, terra cotta, glass, wax heads, etc. If it be true
that the inclemencies of weather and atmospheric agents could cause
the disappearance of plaster saturated with humidity, or placed in
conditions favorable to its destruction, it does not necessarily follow
that these conditions always reproduce themselves. It suffices, to
convince one’s self of this, to _glance at the plates_ 67, 76, 85, in
the magnificent work published at St. Petersburg on the antiquities of
the Cimmerian Bosphorus. These plates represent plasters preserved in
the Museum of the Hermitage, coming from a tomb on Mount Mithridates
opened in 1832, and from another tomb at Kertch excavated in 1843.
These plasters date back to the fourth century before our era.[22]
Adorned with various colors and executed in relief, they were destined
to be attached as ornaments to other objects, such as sarcophagi,
pilasters, walls, etc.”
Well! what if they were? Is this any proof that they were cast? Mr.
Perkins is easily satisfied, if he is assured of this fact by looking
at engraved plates. Are they all of the same size? Are they identical,
as they would be if they were cast from the same mould, or are they
like all other plaster and stucco work of the ancients of which we are
cognizant,—ornaments modeled by hand? or are they pressures from a
flat, shallow mould, like the ectypa? If the latter, they are almost
unique; and so far they prove that the artists who made them understood
this first and simplest process of casting, or rather of stamping.
But from plates it would be impossible to determine this fact, and
Mr. Perkins gives us no reason to think they are unlike all the other
ancient stucco work. He does not profess to have seen and examined them
for himself; at all events, one fact is clear, that these, if they are
in plaster, are painted plaster.
In the British Museum there exist some of these so-called casts in
plaster from Cyrenaica and from Kertch. Undoubtedly they are nearer to
being true casts than anything else which has as yet been discovered;
but, after all, a careful examination of them will show that they are
not casts in the legitimate sense of the word, but merely stamps for
a mould, and fashioned in precisely the same way that was employed in
making the hollow terra cottas. To make these, a very rude stamp was
executed, with no under-cuttings of any kind, everything being filled
up which could impede the removal of the clay, which was pressed into
the stamp, then carefully extracted again and finished by hand. All
the terra cotta reliefs called ectypa were made in this way, and some
of the moulds still exist,—not one of them, however, in plaster. The
same process was employed to make some of the figures of terra cotta
in the round, by making a mould of two pieces divided in the middle,
of a very generalized form, with no under-cuttings. Into each of these
moulds a quantity of clay was squeezed; the two parts were then removed
carefully, and joined together. A general form was thus obtained, and
the artist proceeded to model and to finish it with more or less care.
In this way not only ectypa were made in clay and afterwards baked, but
also small flat ornaments which were afterwards appliqué, or fastened
on to flat or round surfaces,—as on to cista. This is the process by
which fragments of the figures from Cyrenaica and Kertch in the British
Museum were made. The junction of the two halves is clear. The work is
very rude; there are no under-cuttings; everything is filled up which
would in the least impede the withdrawal of the material from the
stamp. There is, for instance, an arm and hand, with the interstices
of the fingers quite filled up. But what clearly proves that these
figures were not cast, as distinguished from stamped, is the head. Here
the hair being adorned with a wreath with under-cuttings, it could not
be withdrawn from the stamp without destroying it, and it is entirely
appliqué, or worked on to the head after it was removed. Had it been
cast, there would have been no such difficulty. Nor, again, is it quite
clear that the material of these figures is pure gypsum. It would
rather seem to be a mixture of gypsum with white clay, or argilla, to
give it flexibility, and enable it to be withdrawn from the mould.
Indeed, it may here be observed that it is in every way probable that
the gypsum used by the ancients in modeling and ornamental work was
differently prepared from that which we now use, and was mixed with
some material which prevented it from setting rapidly, and gave it
strength, ductility, and plasticity. Otherwise it is difficult to see
how such works as those in the tombs of the Via Latina, which no one
can doubt are modeled by hand, could have been executed with at once
so much finish and freedom. Gypsum, as we use it, would set too soon to
enable us to work it in such a manner. In the tombs of the Via Latina
which were lately discovered, it is worked as freely as if it were
clay, and was plainly so prepared as to enable the artist to take his
own time in modeling, without fear of its hardening—or, as we call it,
setting—immediately.
This, then, is nothing new. It is not casting, and these figures are
not casts. They are stamps, just like the ectypa of terra cotta. We
know that κοροκόσμια or dolls were anciently made in this way of wax
and gypsum, or of terra cotta; and these are κοροκόσμια.
To infer from the fact that the Greeks knew and practiced the art
of pressing into shallow moulds of stone, without under-cuttings,
either clay, pitch, wax, or plaster, that they also understood and
practiced the art of making moulds and casts from life or from the
round is utterly unwarrantable. Nothing is more simple than the one
art, while the other is extremely complex. The one is merely like
making an impression from a seal, which would naturally suggest itself
to the first person who left the pressure of his foot in clay or mud;
the other requires various processes of calculation and invention.
In inventions it is not always or ordinarily the first step which
costs, but the subsequent and calculated steps. Centuries often elapse
between the first step and the second. A remarkable instance of this
is to be found in the history of the invention of printing. The first
steps to this wonderful art were taken by the ancient Romans; the
very process by which we now print was known and practiced by them;
but the application of it to the printing of books does not seem to
have occurred to their minds. It cannot, however, but appear most
extraordinary that the idea of printing should not have occurred to
them when we consider the facts of the case. Pliny relates that Cato
published a book containing portraits of distinguished persons of his
time, of which there were many copies; and so far as we can conjecture,
these copies were probably stamped on parchment or some such material,
and afterwards colored. Putting this together with the fact that
ancient bricks have been lately found in Rome with names and numbers
stamped upon them by means of movable types, so that the numbers or
letters could be arranged at will, we might absolutely state that the
ancient Romans understood and practiced the art of printing. They
certainly did print on their brick; they probably stamped the portraits
of cuts in their books,—but so far as we know they never united the
processes, and never stamped a book with movable types. Adopting Mr.
Perkins’s method of argument, we might declare, however, that the mere
fact that none of these printed books have ever come down to us was
entirely inconclusive, since these books might have utterly perished;
while we have the clearest proof that they did print with movable
types on brick, and therefore it is plain that they invented printing.
The step from one of these processes to the other does indeed seem
so evident, so natural, almost so inevitable, that we are puzzled to
imagine how they could ever have overlooked it. Yet there is little
doubt that they did. But from the simple fact of stamping in clay
or plaster to the complex process of making moulds and casts in the
round requires not one step but many, and each one of them requires
calculation and invention. Indeed, if the art were now to be lost, it
would be easy to conceive that centuries might pass before it would be
reinvented.
In the collection of Mr. Fol of Rome, of which we have heretofore
spoken, there are some interesting fragments of ancient statuettes in
the round, very carefully finished in plaster, being the leg and thigh
of one, and the half-breast and a portion of the torso of another.
These are as carefully finished as if they were in marble, but they
are elaborately worked by hand in the plaster, and not cast. These
are exceedingly interesting as showing the method of the ancients
in working in plaster, and they clearly illustrate the process of
Lysistratus as described by Pliny,—the only difference being that the
surface is of gypsum and not of wax, or color. The interior or core
of these fragments, which is solid, is of lime, or a coarse kind of
gypsum, and over the surface of this core is spread a thin coating
of fine gypsum, which has been elaborately worked and smoothed on
while it was fluid. The touches and creases on the surface are those
of a modeler’s hand and stick, and it differs in every way from a
cast. It is therefore plain that the artist first made a core, or
rough “imaginem” or “formam,” of coarse gypsum, and that he improved,
emended, and finished the surface, not by means of “cera infusa in eam
formam gypsi,” but of gypsum spread over it,—just as Lysistratus did.
The language of Pliny is an exact description of this process.
Again, a strong negative indication that gypsum was not used for
casting, or indeed to any extent in modeling, is to be found in the
chapter by Pliny on gypsum. “Its use is,” he says, “to whitewash
[or parget], and to make small figures to ornament houses, and for
wreaths.” He also adds that it is a good medicine for pains in the
stomach; but he entirely omits to mention that it was ever used for
casting. Is it possible to believe that if it were so used he would
not have alluded even to such a fact? Would it be conceivable that
at the present day a chapter could be written on plaster of Paris,
omitting its employment for the purpose of casting? After giving us
this enumeration of the uses to which gypsum is applied, Pliny goes on
to describe its nature, tell where it is found, and name the different
kinds; and he concludes with no allusion to any other use than what he
has previously stated.
Again, Pliny in the chapter on Lysistratus—which it must be remembered
is devoted to modeling—mentions one fact which seems to be inconsistent
with any knowledge at that time of casting. Arcesilaus, he says,
modeled a drinking-cup or mixing-bowl in plaster, which he sold to
Octavius, a Roman knight,[23] for a talent (£250). It is impossible to
believe that such an enormous price would have been given for a mere
plaster bowl. If the process of casting from it was then understood,
Arcesilaus might have repeated it in cast a thousand times, and the
original and the cast being in the same material, one would have been
quite as good as the other, if retouched. Yet he seems only to have
made one, and to have asked a talent for that. Again, Lucullus made a
contract with this same artist to model for him in plaster a statue of
Fabatus, for which he agreed to pay him no less than 60,000 sesterces,
or £530.
It is worth noting, too, as a curious fact, that just at the very
time when Lysistratus is supposed to have invented plaster-casting,
the art of brass-casting began to decline in character and style, and
soon after seems to have died out and been lost; at all events, Pliny
tells us that soon after the 120th Olympiad the art perished,—“cessavit
deinde ars.” And as Lysistratus lived only about twenty-five years
previously, it would be singular to find one of these arts dying out
just as the other was being developed.
Mr. Perkins also thinks it valuable to tell us that Canova was of
opinion that the sculptors of antiquity made finished sketches, and
then by means of proportional compasses enlarged them and took points
on the marble; and he adds, “We should weigh these words of a great
sculptor who devoted himself to the most minute researches on this
subject, as well as to everything that had relation to the fine arts.”
We agree that we should weigh the words of this distinguished sculptor,
though we were not aware before that he was a profound archæologist,
or had made minute researches on this subject. But how in any way does
this tend to prove that the ancient Greeks and Romans knew how to cast
in plaster? We are equally unable to see the precise bearing on this
question of the fact also stated by him, that the drill is supposed by
some to have been invented by Callimachus, and by others to have been
used long before; or that the pointing of a statue was probably known
to the Greeks, and certainly to the Romans.
Yet in a certain way the opinion of Canova that the ancients made small
sketches, and by proportional compasses transferred their proportions,
measures, and general forms to their large works, has an argumentative
relation to the subject different from what Mr. Perkins probably
supposed. This opinion is undoubtedly well founded, and accepting it
as such, what does it indicate? That the process of casting in plaster
was known to the ancients? By no means. So far as it goes, it proves
diametrically the opposite,—as Mr. Perkins might have seen, had he
weighed the words of this great sculptor.
In fact, this leads us to one of the strongest arguments against the
opinion apparently advocated by Mr. Perkins. Had the ancients known
how to cast in plaster from the model, as they knew how to cast in
bronze, this process of making small statuettes and enlarging therefrom
would have been quite unnecessary. They would thus have escaped the
incorrectness which is unavoidable in such a process, by at once making
their models of full size, and completely finishing them in clay or
other plastic material before transferring them to the marble. Their
process probably was to make a small statuette in clay, and then bake
it or dry it. But in transferring proportionally this small figure
into a large one, an objection occurs. Defects scarcely perceptible in
a small figure become gross defects when multiplied into a large one.
Not only variations of one eighth of an inch more or less in small
particulars in a figure a foot high would alter entirely the relative
proportions of a figure eight feet high, but other inaccuracies
inevitably occurring in enlarging by proportional compasses would
increase these disproportions, so that the increased figure would
be invariably untrue in its effect and in its measures. Now this is
precisely what is apparent to any one who carefully studies the antique
statues. Even in works showing the highest artistic knowledge and
skill, the want of correspondence of measures and proportions between
the two sides of the figure is very manifest; and the larger they are
the more this is exhibited. Thus, to take one of the highest examples,
in the Theseus we find astonishing knowledge and artistic skill in
treatment, beside disagreements of measurement in corresponding parts,
which are evidently the result of the defective mechanical process
of enlargement. The legs are beautifully modeled, but of unequal
length,—one being much longer in the thigh than the other. The same
observation is true of the clavicle, and indeed throughout the statue.
Now even an inferior artist would have seen and avoided these mistakes
in modeling the statue full size, but the defect would be easily passed
over by the eye in the small sketch, particularly if the statuette were
merely a sketch, as was in all probability the usual case. It would
be difficult to believe that an artist with the mastery shown in this
statue would not have seen and corrected these mistakes, had the model
of this figure been of the same size. This of course he perceived after
the points were taken in the marble and the work was roughed out, but
then it was too late to remedy them. This difficulty he and all other
artists must constantly have felt. The question was how to avoid it.
Nothing could have been more simple, if the modern process of casting
in plaster from the clay model had been known to them. They would
simply have modeled the statue in clay of its full size, cast it in
plaster, and been sure of its exact proportions and measures.
Let us take one step further. Had they understood the modern process
of casting in plaster from the clay or from a statue, they could from
the cast have multiplied in marble the same statue any number of
times, identically or with such minute differences as few eyes could
perceive. The repliche in a modern sculptor’s studio are scarcely
to be distinguished from each other, and there would have been no
difficulty in doing the same thing in an ancient sculptor’s studio.
What is the fact known? So far from this being the case, not only are
there comparatively very few repliche even of the most famous statues,
for which there would necessarily be a great demand, but even in the
various repliche which we have there are not only no two which approach
to identity either in attitude or in size, but one can scarcely say of
any of them that the artist had more at best than a vivid recollection
of the original or of some other replica, much less that he had it
before him to copy even by eye. Often the attitude is changed, as well
as the size and proportions; sometimes the action is reversed; and in
all cases such differences exist as it is impossible that the clumsiest
workman could have made with a cast of the original before him. Nor
do we read or hear of any copies in our sense of copy; that is, exact
reproduction of any of the great works of the great sculptors. Look,
for instance, at the Venus of the Capitol and the Venus de Medici
and the St. Petersburg Venus; they are all repliche of the renowned
statue by Praxiteles, but beyond the general attitude there is no
resemblance, not so much as any clever artist of to-day could make
from mere recollection. Look again at the portrait busts; how many are
there of Marcus Aurelius, Octavius Cæsar, and Lucius Verus!—and no two
of them approaching identity. Of the thousands of statues which have
been excavated, no two are exact copies from the same model. There is
at best nothing more than a family resemblance among those which are
most alike. Would this be possible, if the ancients knew and practiced
the art of casting in plaster as we do? It would seem to be utterly
impossible, or at least improbable to the highest degree.
Again, why should not the great artists themselves, or their scholars,
have made repliche of their famous statues? Nothing would have been
easier had there been any casts from them. They were greatly coveted,
and the prices paid for the original works were enormous,—so enormous
that the largest prices of our day shrink into insignificance beside
them. For the famous nude Venus by Praxiteles, Athens, in her extreme
desire to possess it, offered in exchange to pay the whole public
debt of the state to which it belonged. This offer, however, was
peremptorily refused. Yet what could have been more easy, had a cast
of it been in existence, or had they known how to make one, than for
Praxiteles or his scholars to have made an exact replica, fully equal
to the original or even superior to it, with additional touches of the
master’s hand? That this was never done, or hinted at, proves that, the
statue once having passed out of the artist’s hands, he could repeat
it from memory only by aid of his sketch; and this would not only have
cost him as much labor as making a new statue, but would in no sense
have been identical. Again, is it to be supposed that if Polyclitus had
an absolute cast of his life-size statue of the Doryphoros which would
have enabled him to repeat it with exactness, the original would have
commanded such a price as one hundred talents, or £25,000? Or is it
possible to suppose that Arcesilaus would have received a gold talent
(£250) for a plaster bowl which could have been repeated by casting,
for almost nothing? It was because it was modeled, and the modern
process of casting in a piece-mould was unknown, that it commanded such
a price. Here making a rude stamp without under-cuttings would not
suffice. The _finesse_ of the work could not be given, and the work
would have been destroyed or greatly injured in the attempt.
If it be a fact that the Greeks and Romans knew this process, one would
naturally expect to find at least some fragments of casts or moulds
in plaster of their great works,—as for instance of their small and
exquisite Corinthian bronzes, if not of their large figures. But, so
far as we are aware, nothing of the kind has ever been found. The
whole city of Pompeii in the height of its luxury was buried under
a fall of ashes, which for many long centuries preserved the most
refined, fragile, and delicate utensils and works of art; and it is
but a few years since that we removed these ashes and explored its
houses and rooms which had been untouched since that fatal calamity
befell them of which Pliny gives us so vivid an account. It is on the
statements of the younger Pliny himself that those rely who claim
that the ancients knew and practiced casting in plaster. Long before
his day, then, this art had been invented; and we should naturally
expect to find some specimens of it in this city of luxury, among its
pictures, its vases, its statues, and its glass. But in all Pompeii
there has not been found a vestige of a casting in plaster. Its
stuccoes still remain, the bas-reliefs worked in plaster on its walls
are still uninjured, its paintings are still fresh, its vases unbroken,
its household utensils perfect. Hermetically sealed up under that
mound of ashes, there was nothing to injure a cast in any house, if it
existed. But there is absolutely nothing of the kind. Yet this was a
people devoted to art, and whose houses were filled with knick-knacks
of every kind. We find the sculptor’s studio, but there is not a cast
in it, nor is there the shop of a caster. It is plain, therefore, that
there was not a cast in Pompeii.
But if anywhere there were casts from the round there were also
piece-moulds from the round. Where are they? Has any person ever
heard of one? Now a hollow cast is comparatively a fragile object; but
a plaster mould, saturated as it must be with oil, is anything but a
fragile object. Sheltered from the inclemencies of storm and rain, it
would last for thousands of years, and would even resist a century of
exposure to the weather of Italy. But not underground nor aboveground
anywhere has such a thing been found. Whatever moulds have been found
are fit only for mere stamping. They are extremely rude, without
under-cuttings, and seem merely to give a general shape. They are not
cast upon anything, but worked out by hand, and are not in plaster.
They are all small; nothing ever has been found which is either a
mould, or a cast from life, or from a statue, or from a vase or bowl,
or any careful work of art.
An ancient manufactory of terra cotta has been lately discovered and
unearthed at Arezzo in Tuscany, and a large number of moulds was
found, taken apparently from vases executed originally on some hard
metal, probably in silver. The figures on these moulds are of the most
exquisite design and execution, and for beauty and delicacy of finish
exceed anything which remains to us of Greek or Etruscan art. There
are no under-cuttings, and the relief is so low and flat as to yield
an impression scarcely, if at all, higher than a seal or intaglio.
All these moulds, however, are in terra cotta. Not one is in plaster,
though in this material they could have been executed more easily
and exactly, and could have been reproduced in the original size. Of
course, first taken, as they were, in soft clay, then baked, they of
necessity shrank in size and were subject to warping and cracking, all
which defects would have been avoided had they been made in plaster.
All this would indicate that the use of plaster in making moulds was
not practiced at that period, even in such a simple operation as this.
In face of this we must say we do not agree with Mr. Perkins when
he thinks he “establishes by undeniable proof how little founded is
the opinion of those who pretend that the ancients did not practice
casting in plaster,—sustaining it by the complete absence of statues
and statuettes of plaster or fragments of any kind in the excavations,
when nevertheless thousands of objects are found of the most fragile
nature;” and especially when the undeniable proof which he offers is
the existence of some works and arabesque ornaments in plaster found
at Kertch, and supposed to belong to the fourth century before the
Christian era, and which apparently he has never seen. On the contrary,
we should like to know how he explains the fact that no indubitable
ancient moulds or castings have ever been found.
But Mr. Perkins does not seem to reason beyond his texts. He does not
discuss the probabilities of the case; he does not undertake to account
for, or to harmonize with his view, the great fact that nothing has
been found of ancient art cast in plaster. Outside of what is written
in books he does not venture. He does not even seem to have a clear
opinion of his own. He says, “Sur ce point [casting in plaster] les
textes nous laissent dans les ténèbres. Faut-il s’en étonner? Non!
Les auteurs classiques trompent notre curiosité sur des choses d’un
bien autre intent. Que nous disent-ils des vases peints, dont les
musées de l’Europe regorgent? Rien,” etc. Well, if the texts leave us
in darkness, are we then to know nothing and to think nothing? Are we
not to exercise our minds, and if a doubtful text seems to indicate
a fact utterly at variance with our reason and with the facts we
know, are we to treat that text as a fetich, and bow down and worship
it, because it is written in a book? Are we to endeavor to wrench
everything into harmony with it? Or, if it will not agree with facts
of which there is no doubt, are we not rather to sacrifice the text
than our own reason? And especially, are we to pay such reverence to
a doubtful text of Pliny, the most careless of writers, the least
accurate of archæologists? As to the painted vases, no argument or
ancient texts are needed; there is no question in respect to them;
they existed in great numbers; but in respect to casting in plaster
there is nothing but texts to depend upon. Nay more, there is only one
passage in any ancient author, so far as I am aware, that _seems_ to
assert the existence of this process; and the question is as to the
meaning of this very ambiguous passage. If it means what Mr. Perkins
supposes, where are the moulds; where are the casts; where are the
finished likenesses; where is there anything, in a word, to support the
statements of Pliny, as thus interpreted? Does it not seem amazing that
they should all have totally disappeared?
That the text of Pliny, on which all rests, does not mean what it
is supposed to mean by Mr. Perkins, we have endeavored to show; but
at all events, since it is admitted to be most obscure and scarcely
intelligible, it would be better to throw the text overboard, if
it is in conflict with all we know and is improbable in itself,
particularly when we take into consideration the corrupt condition
of the entire text of Pliny. Dr. Brunn, who is certainly an able and
learned archæologist, does not hesitate to reject a portion of this
very text, from the words “idem et de signis effigiem exprimere,” as
an interpolation; and there can be no doubt in the mind of any one who
carefully examines it that this entire passage is full of confusion of
ideas and statements.
Mr. Perkins endeavors to strengthen his position, and also the text of
Pliny as he understands it, by a citation from the “Tragic Jupiter” of
Lucian, in which the statue of Hermes complains that he is spotted by
the pitch with which the sculptors cover his limbs every day, “afin
de les reproduire,” he gratuitously adds, with no authority in the
text for such a statement; and _apropos_ of this he tells us that one
may “model with pitch mixed with marble dust or brick.” He adds: “It
is what the Italians call ‘ciment,’ and they employ it for the most
delicate parts of the mould. It is sufficient in order to keep it in a
malleable state to set the piece on which one is working near the fire,
or to soften it from time to time in a bath of hot water.” “Now this
information,” he continues, “which we owe to one of the most eminent
and learned artists of our age, is very precious, since it gives us
the real meaning of the passage in Lucian.” This taken in connection
with a passage in Apollodorus representing Dædalus making a statue to
Hercules ἐν πίσσῃ or ἐν πίσῃ—the word is doubtful—induces Mr. Perkins
“to conclude, first, that two centuries before the Christian era, pitch
was used, mixed without doubt with other substances, to cast statues
[mouler les statues]; second, that the passage in Lucian not only
contains one of those railleries of which the Voltaire of antiquity
was so prodigal, but leads us to suspect that it veils the indication
of one of the processes of casting.” That is, first he inclines to the
opinion that πίσσῃ (pitch) is a misprint for πίτυς (pine wood), and
that the statue made by Dædalus was in wood; and then he immediately
turns around, and thinks that it proves the existence of casting in
plaster. It cannot mean both; and the probability would seem to be that
he is wrong in both suppositions, and that Dædalus was only employed in
painting his statue in resin or wax.
The seriousness of this passage is more remarkable than its accuracy.
Who can the eminent and learned artist be who has given us this so
precious information?—“ce renseignement tres-précieux,”—which is known
to every humble caster in Europe,—though he is not quite correct in
the composition of what he says the Italians call “ciment.” He must
be a French artist who scorns the Italian language as being, in the
words of another of his countrymen, “rien que de mauvais Français.”
“Ciment” is not an Italian word, and “cimento” has a quite different
significance,—that of attempt or essay. The Italian casters call this
material “cera,” though it is not wax. But aside from this, let us
consider this passage from Lucian to which Mr. Perkins, following other
writers, refers us as showing that the process of casting in plaster
was known to the ancient Greeks.
The Ζεὺς Τραγῳδός of Lucian is a satire on the divinities of Greece,
and a council of them is called to deliberate on what should be done
in consequence of an assault upon their nature and power by Damis. The
gods are called upon, and a question arises as to the precedence they
should have, whether it should be according to the material of which
they are made,—of ivory, gold, bronze, stone, or clay,—or according to
the excellence of their workmanship and the skill of the artist; but
such confusion of claims is made that no precedence is finally allowed
to any one, and the question as to the reasons and arguments of Damis
and his opponent Timocles is discussed. While this is going on, a
figure is seen approaching which is thus described:—
“But who is this who comes in such haste [ὁ χαλκοῦς, ὁ εὔγραμμος, ὁ
εὐπερίγραφος, ὁ ἀρχαῖος τὴν ἀνάδεσιν τῆς κόμης], this bronze, this
beautifully chased or engraved, beautifully outlined, the archaic
in the arrangement of his hair [πίττης γοῦν ἀναπέπλησαι, ὁσημέραι
ἐκματτόμενος ὑπὸ τῶν ἀνδριαντοποιῶν]; he is clogged with pitch from
seals or impressions being daily taken from it by the sculptors.”