"Not to personages alone do pictured monuments give life. The same

character of sensible reality is imparted to the frame and to the

surroundings of the picture, to all the theater where these actors

played their parts. Of this truth no one of our teachers, when I was a

collegian, seemed to have a suspicion. There was not an illustration

in the cold and dry compendiums which were placed in our hands. I can

almost ask myself if, when I studied Greek and Roman history, I was

really convinced that Sparta and Athens, Rome and Carthage had

actually existed. I certainly did not know how or where to place them

in space, what idea to have of their situation, or of the outlines

made by the ridges of their walls, their houses, and their temples.

All these cities were to me vague shadows, floating between heaven and

earth. No one of them answered to a distinct and defined form.

"If this be the case with classical antiquity, in spite of the color

and splendor of the narratives of its writers, how much more difficult

is it to know and understand France of the middle ages when condemned

to study it in its literary work alone! The literature of the period

is partly in debased Latin, partly in early French. The French of the

day was not the language of the thinkers. The deep thought of the age

is not to be found in minstrelsy and ballads. It must be asked of the

learned, of philosophers, of theologians, and of sacred writers. But

to follow them in the subtle analyses and in the excessive

complications of symbolism, in which they delight, requires mental

efforts which are made all the more laborious by the artificial

character of the church Latin, which no longer continued to renew

itself at the source of popular speech. It is impossible to see how

such works, in spite of their value to erudition, can be called to

take part in the education of the young. It is for this reason that

lately, by a judicious innovation, a discreet place has been made in

the curriculum for histories and poems written in the common language,

for the Chanson de Roland, and for the works of Villehardouin and

Joinville. But the student can only read these in translations, or in

those adaptations which so modernize the language as to leave but a

little of its original flavor, and which therefore make but an

imperfect contact between the original work and the mind of the

reader. But supposing the scholar capable of mastering the original

text: can its formless and superabundant prose, or the tiresome

monotone of its flowing dissonances, give him emotions which have the

vivacity of those which a page of Tacitus or a song of Virgil gives to

those who know even a modicum of Latin? Can they have the power to

excite the imagination in the same degree as any strong and concise

sentence of the historian, any sonorous and glowing verse of the Roman

poet?

"It is only exceptionally and as by flashes that the writings of the

middle ages give the impression of true beauty. The conceptions are

often grand, but the expression is always weak and dragging. On the

other hand, Roman or Gothic churches are not less beautiful after

their manner than Greek temples. Their beauty is of another fashion,

but many souls are touched more deeply. They manifest no less clearly

the power of the religious faith which constructed them. The

particular character of Christian faith is shown with singular

clearness in their majesty, in the elevation of their vaults, in the

half lights which flood them, and in the thousands of figures which

populate and animate every surface. As in Greece, the sculptor

co-operates intelligently and docilely with the architect and has

occupied no less happily the allotted fields. As Phidias and Alcamenes

represented on the pediments and friezes of Doric temples the great

gods of Greece and the local myths of Athens and Olympia, so anonymous

masters, called to decorate the cathedrals of the middle ages, have

placed impressive statues on the sides and in the _voussoirs_ of the

portals, in the open galleries which run along the façades, on the top

of the pinnacles which throng the roof--in fact, everywhere where

space is offered. These statues, distributed in an order regulated by

doctrine and tradition, show forth the Saviour, the Virgin, saints and

angels, prophets and apostles, and hosts of personages and scenes

suggested by Holy Writ or by local and popular legends. Among these

images there are many at Bourges, Chartres, Rheims, Amiens, and Nôtre

Dame de Paris, which are marvels of severe elegance, of chaste and

haughty grace, and of lofty moral nobility. This wonderful statuary

has but lately been investigated, exposed, and studied, but already it

would be difficult to find a connoisseur unwilling to compare with the

most boasted statues of antiquity that admirable image of the teaching

Christ of the west portal of Amiens, to which the popular surname has

been attached of _le Beau Dieu d'Amiens_.

"For evident reasons, French sculpture of the thirteenth century did

not, as did Greek sculpture, devote itself to the study and

reproduction of the nude. It denied itself this attraction. All

figures are clad; but beneath the drapery, which is in fine masses

with large folds, the outline and the movement of form are indicated

with precision. The principal interest and the rare originality,

however, of this sculpture is that it is perhaps the most expressive

that has ever existed. This expressiveness appears in the general

effect of the pose, in the disposition of the drapery, but especially

in the character which the artist has succeeded in giving to the

features of the face.

"The august mysteries of the Christian dogma, the poetry of the Old

and of the New Testament, the triumphant deaths of martyrs, the

miracles of saints and their infinite charity--these things which the

middle ages failed to put into clear and intelligible words are fully

rendered in sculpture. The work of the chisel is large and firm.

Difficulties are not sought, nor are they feared. Whatever be the

material, the form is sure. To understand how superior the plastic is

to the literary work, and to measure the distance, compare the Amiens

statue with the portraits the authors of the Mysteries endeavor to

draw of the Son of God. 'What can be more flat than these poor verses,

which are nevertheless of the sixteenth century? The authors had good

intentions and an apprehension of what should be done, but they were

betrayed by the language in which they wrote. The sculptors of the

thirteenth century, on the contrary, who possessed fully the grammar

of their art, expressed all they felt, and have left us the most

divine images of Jesus Christ in existence.'[18]

[Footnote 18: E. Mâle. Revue Universitaire, Third Année, l. i, p.

15.]

"Italy of the Renaissance is quite unintelligible to any one who has

not measured the place held by art in the preoccupations not only of

artists who practice it, but of all men of all conditions--of princes,

nobles, tradesmen, and of citizens of most humble occupations. No one

in any rank is without a passionate love for plastic beauty. This love

was Italy's life and Italy's death. She died of it, because all her

sap was consumed in satisfying it. It made her indifferent to her

dismemberment, to the hard yoke of her tyrants, to the loss of her

political liberties, and of her independence. But, at the same time,

it constituted the intensity of her life which was exhausted and

renewed again in the ardor with which she pursued her ideal and in her

endeavors to realize it under all its aspects. Let him who would wish

to obtain an exact idea of this condition reside for a while in

Mantua, in Parma, in Sienna, in Florence, or in any other less-known

city which nevertheless had its local school of art, its architects,

its sculptors, its painters, some of whom, though they only worked for

their native city, were not far from manifesting genius.[19]

[Footnote 19: Raphael's Madonnas save the reputation of the papal

see of the sixteenth century, for pontiffs who cherished such pure

and gentle representations could not have been so corrupt as

Luther's partisans assert.]

"The written history of the seventeenth century and its rich

literature can not alone give an idea of the situation occupied by

Louis XIV in Europe when he was admired, imitated, or rather servilely

copied, as pre-eminently the type of the modern king even by those who

hated him the most. After two centuries, have we not seen his

wonderful prestige still potent in dominating the sickly mind of Louis

II of Bavaria? In his desire to copy his chosen model Louis ruined

himself in building palaces. In this folly he showed discrimination.

Louis XIV, when dying, may have accused himself of having indulged too

great a love for building; but his edifices, with their majestic

grandeur and the opulence of their decoration, gave that royal life a

frame which had much to do with the dazzling which all Europe

experienced when in the presence of _le Roi Soleil_. In order to

recognize and experience, though but for a moment, a little of the

impression felt by all contemporaries, Versailles must be visited; the

apartments of the palace, the terraces, and the alleys of the park

must be traversed. Thus will be thrown upon this historic figure a

light far more brilliant and true than could possibly be the result of

learning by heart accounts of all the campaigns of Turenne or Condé,

or all the clauses of the treaties of Nimègue and Ryswick.

"The same may be said of the eighteenth century, of which only an

incomplete idea can be had without a knowledge of its art. This

century, to which Voltaire gave the note, seems to have had no

sentiment of poetry. Down to the time of André Chenier everything

called poetry was no more than rhymed prose. The imagination, however,

did not lose its rights. Like a stream which changes its bed, it

withdrew from literature to flow into the arts of design. There it

gives evidence of invention and of light and spontaneous grace.

Architects adopt plans of happy arrangement. They employ forms of rare

elegance both in the elements of construction and in the ornaments

which decorate them. Such sculptors as Capperi and Houdon give to

portraiture a marvelous intensity of life, while the terra cottas of

Clodion, with their fantastic and voluptuous charm, recall the clay

modelers of antiquity. Such painters as Greuze, Lancret, and Boucher

spread before the eyes living idyls, while Watteau and Frangonard

conjure dreams of ideal Cytheras, of a chimerical paradise where reign

eternal youth and eternal desire. The politics of our kings and of our

ministers of the period is but a succession of faults and weaknesses.

The best concerted plans come to naught. The most brilliant victory

produces no useful results. If France, in spite of so many reverses,

still held her supremacy in Europe, she owed it to her writers and to

her artists."

Perrot's arguments might be used with even greater force in reference

to those notions which have had no Comines, no Joinville, no

Froissart, no Villehardouin, but the history of whose civilization may

be traced in monuments along the Rhine and the Danube, the Ems and the

Elbe. In the last part of the article Perrot considers the best

methods of giving the desired instruction. However interesting and

valuable his suggestions may be in communities where the instruction

has already been established, it is evident that there must first be a

conviction of the value and necessity of such studies and the

determination to have them started. Methods are not difficult to

devise, and will vary with national and individual tastes. That

American colleges of thirty, forty, or fifty years ago should have

objected to the introduction of the history of the fine arts into

their curricula is easily understood. Art in any form was regarded by

the New England mind as an emanation of the devil, and the New England

mind controlled American colleges. Why the repugnance continues to

exist is harder to understand. It may subsist from ignorance, from

prejudice, or from conservatism. Conservatism may still regard all

information to be derived from art as objectionable. Prejudice may

still be strongly fixed in the notion that written and spoken words

are the only vehicles of instruction, and that the arts are useless

and idle vanities, while ignorance may be awaiting demonstration which

will have to be strong and conclusive to awake it from self-satisfied

apathy. May the good words of Perrot help on the cause and accelerate

the time when the best and the fullest education will be offered by

the American university!

HOW STANDARD TIME IS OBTAINED.

BY T. B. WILLSON, M. A.

Almost everybody knows that observatories are the places from which

standard time is sent out and corrected daily or hourly. But

comparatively few have more than the vaguest idea of the means used at

the observatories for obtaining it.

Probably the majority of people suppose that the observatories obtain

the correct time from the sun. When the average man wishes to give his

watch the highest praise he says, "It regulates the sun," not being

aware that a watch which would keep with the sun around the year would

have to be nearly as bad as Sam Weller's. The farmer may safely decide

when to go in to dinner by the sun, but if the mariner was as

confident that the sun marked always the correct time as the farmer is

he would be sure to be at times two or three hundred miles from where

he thought he was. In other words, the sun--that is, a sundial--is

only correct on a few days in each year, and during the intervening

times gets as far as a whole quarter hour fast or slow.

These variations of the sun from uniform time caused no end of trouble

between the astronomers and the fine clockmakers before it was

discovered that sun time is subject to such irregularities. The better

the clock, the worse it often seemed to go.

But as the variations in sun time are now accurately known, correct

time might be obtained from the sun by making proper allowance, were

it not for the difficulty of observing its position, with sufficient

exactness. The large disk of the sun can not be located so perfectly

as can the single point which a star makes. For this reason

astronomers depend almost wholly upon the stars for obtaining accurate

time. It is the method of doing this which we propose to describe.

There are several hundred stars whose positions have been established

with the greatest accuracy by the most careful observations at a

number of the principal observatories of the world. If a star's exact

position is known, it can readily be calculated when it will pass the

meridian of any given place--that is, the instant it will cross a

north-and-south line through the place. The data regarding these stars

are all published in the nautical almanacs, which are got out by

several different observatories for the use of navigators and all

others who have uses for them. These stars are known as "clock stars."

Every observatory is provided with at least one, or, better, several

clocks that are very accurate indeed. Every appliance and precaution

which science can suggest is resorted to to make these clocks

accurate. The workmanship is, of course, very fine. What is known as

the "retaining click" prevents their losing a single beat while being

wound. The small variations in the length of the pendulum which

changes of temperature would cause are offset by compensation. The

rise of the mercury in the pendulum bob, if the weather grows warmer,

shortens the pendulum precisely as much as the expansion of its rod

lengthens it, and conversely if it becomes colder. Such clocks, too,

are set on stone piers built up from below the surface of the ground

and wholly independent of the building itself. Often the clocks are

made with air-tight cases, and sometimes are placed in tightly closed

chambers, only to be entered when absolutely necessary. Some fine

clocks even have appliances for offsetting barometric changes, but

these affect such clocks less than other influences or imperfections

which can not be accounted for, and thus they are seldom provided

against.

The astronomer's principal clock--the one he uses in all his

calculations--marks what is known as sidereal, not ordinary, time. The

revolution of the earth in its orbit sets the sun back in its place

in the heavens at the rate of about four minutes a day, or one whole

day in a year, so that this clock, indicating star time, gains this

amount and is only with ordinary clocks once a year. After it is once

adjusted, no attempt is made to regulate it exactly, as the astronomer

would better calculate its differences than disturb its regulation,

always provided its rate is very uniform and accurately known.

One or more of the other clocks, however, are made to show ordinary

time, and corrected by observations taken every few days. It is from

this clock that the standard time is sent out.

It is possible to connect any of these clocks telegraphically with an

instrument in the observatory, known as a chronograph. It consists of

a cylinder with a sheet of paper around it, on which rests a pen

connected with the telegraphic instrument which follows the beats of

the clock. The cylinder is turned slowly by clockwork, and the pen,

carried slowly along by a screw, describes a spiral on the paper with

jogs or teeth in it about a quarter of an inch apart, caused by the

beats of the clock. In this way the astronomer secures a visible

record of the beating of his clock, or rather of the movements of his

telegraphic recorder. Thus, if he has another key on the same circuit

with the clock, connected with his chronograph recorder, and should

touch it between the beats of his clock, it would put in an extra jog

or tooth on his record, and it will show, what he could not have told

in any other way, in just what part of the second he touched this key,

whether in the first or last part of the second, and precisely how far

from either end--that is, he can determine fractions of a second with

great nicety.

[Illustration: A SHORT SECTION FROM THE PAPER BAND OF THE CHRONOGRAPH

CYLINDER, SHOWING TRACINGS OF PEN CONNECTED WITH CLOCKS: 1, seconds of

sidereal clock; 2, both sidereal and common clocks; 3-10, the tracings

of the mean-time clock fall steadily behind the other; 11, sidereal

only; 12, connected with observer's key. The extra teeth show when a

star passed each of the five spider lines. At the extreme right is a

"rattle," put in to show where the observation is on the cylinder.]

As a matter of fact, he has such a key at the telescope which he uses

to make his observations in taking time, so that when he wishes to

record the precise instant in which anything takes place which he is

viewing through his telescope he has but to press the key in his hand

and an extra tooth will be put into the record which the clock is

making, somewhere among the regular teeth put in by the beating of the

clock. Later, when he takes out the sheet he can see just where the

tooth came, and so at what instant it was. If, now, he knows exactly

what the instant was according to the true time as given in his

almanacs--that is, what his clock ought to have shown at that

instant--he can tell how nearly right his clock is. Once knowing how

this clock is, it is a simple calculation to find how the clock which

sends the signals is running, and to alter it if needed in a manner we

shall describe later.

The observations the astronomer makes use of to determine these

instants of time are upon the "clock stars." He uses a rather small

telescope, known as a transit. It is placed with the nicest accuracy

in a north-and-south line. It can turn over vertically, but can not

move sideways out of its line. Its alignment is kept perfect by

occasionally sighting some small mark a few rods from the observatory,

either north or south.

If the astronomer points this transit, say, halfway up the southern

heavens and sees a star pass across the center of its field he knows

that that instant gives, as it were, the "noon mark" of that star. If

it is one of the "clock stars," he knows by his tables what that

instant of time is--should be--by his clock.

We have seen what his means are of comparing his clock and his

observations. But observe, now, how much pains he takes to get the

most exact observations.

To begin with, he must have calculated to a nicety his location. The

director of an observatory always knows where he is located in a sense

that few other men do. The accuracy of a large part of his

observations of any kind depends on his first having determined the

latitude and longitude of his observatory within a very few feet. Then

the data given by his tables are all modified, and adapted to conform

to his locality.

There are stretched across in the eyepiece of his transit five spider

lines. The central one is on the central line of the field of his

instrument. In observing a star for time the astronomer watches it as

it is carried by the rotation of the earth past each of these spider

lines, and presses his key--that is, makes a record--as it crosses

each line. Taking the average of these five observations, he makes

the possible error very small. But, in addition to this, he also

usually makes observations on at least four clock stars, which gives

him twenty observations to average up and determine by. As he inspects

the record of these observations which has gone upon the chronograph

sheet along with the clock beats he is able to determine, after proper

calculations, how his clock stands.

Such observations are made every three or four evenings, and thus the

clocks are not given time to get far out of the way. It is not usual

for a good clock to show a variation of more than half a second. If

the astronomer finds that his clock which is sending the time is

running a fraction of a second slow, he goes to it and lays on the top

of the pendulum bob a minute clipping of metal, which is equivalent to

shortening the pendulum an infinitesimal amount. When he takes his

next observation he discovers how his clock has been affected, and

again treats it accordingly. Thus the time that is sent out

automatically by the clock is kept always correct within a small

fraction of a second. Those who receive the time sometimes arrange

electro-magnets near the pendulums of their clocks, which act with the

beats of the observatory clock, and their attraction is enough to hold

or accelerate the pendulums as needed to make them synchronize with

the observatory clock.

It will be seen that the means of obtaining exact time involve a very

considerable outlay, and that the services of highly trained men are

needed. The public is thus greatly indebted to the railroads,

telephone companies, and other corporations which usually bear the

expense of securing standard time. It is probable, however, that from

motives of scientific pride no observatory would undertake to charge

for this anything like what would be exacted for such rare service in

any department of the commercial world.

It is worth while to note that even with such perfect clocks and

favorable conditions it is still impossible to secure perfect

timekeeping. Add to this the fact that it is not usual for those who

send out the time, after it has been received from the observatory, to

pay much heed to variations, even of several seconds, in their master

clocks, and we see why it is a disheartening task to keep the best

watch as near the second as the owner would fain have it. In the first

place, the watch could hardly be made to keep such time if kept still

in an unchanging temperature; secondly, it is still less capable of it

when subjected to the jolting and changes of temperature it encounters

when carried; and, thirdly, the means of obtaining time with

sufficient exactitude are rarely available to the general public.

AGRICULTURAL EDUCATION IN FOREIGN COUNTRIES.

BY W. E. DE RIEMER, M. A.

The recent death, at the closing of the year 1898, of the lamented

Senator Justin S. Morrill, who, as being the author of the Land-Grant

College Act, is justly styled the father of agricultural education in

the United States, seems to suggest the desirability of taking a

survey of agricultural education as it at present exists in other

countries than our own.

Appletons' Popular Science Monthly, December 1899 Vol. LVI, November, 1899 to April, 1900 · 第 6 / 16 段