FROM the experiments related in Dr. Springsfeld’s _Commentatio de
prærogativa thermarum Carolinarum, &c._ which you were so good as to
send me some time ago, it appears, that these waters are not only
possessed of a very extraordinary power of dissolving the stone, but
that in this respect they greatly exceed lime-water.
(A) Thus, Dr. Springsfeld having infused, for 14 Days, in a heat of 96
degrees of Fahrenheit’s scale, three pieces of the same _calculus_,
each weighing 30 grains, in eggshell lime-water, the Carlsbad water,
and in the urine of one who daily drank this last water, renewing these
several menstruums every day, he found, on the 15th day, that the
_calculus_ in the lime-water had lost 1 grain, the _calculus_ in the
Carlsbad water 6 grains, and that in urine 5 grains.
(B) Again, having divided another _calculus_ into four parts, each
of which was reduced to 80 grains, he put the first in oystershell
lime-water, the second in Carlsbad water, and the third in the urine
of a person who drank this water. After 20 days, during which time the
menstruums were renewed every day, and kept in a heat of 96 degrees,
the dried _calculi_ had lost of their weight as follows: the first 3
grains, the second 18 grains, and the third 14 grains.
Altho’ I make no doubt that Dr. Springsfeld, who appears to be a man
of candour, as well as learning, has faithfully related the event of
the experiments, which he made; yet either the lime-water he used must
have been very weak, or some other mistake must have happened in his
experiments: for in all the numerous trials I made, about 15 years
ago, of lime-water, as a solvent for the stone, I always found its
dissolving power much greater, than it appears in Dr. Springsfeld’s
experiments. And as in these trials different urinary stones were used,
it can scarcely be imagined, that it was owing to the peculiar hardness
of Dr. Springfeld’s _calculi_, that the lime-water made so little
impression on them. However, to be still further satisfied of this
matter, I made the following experiments.
1. I put a piece of a very hard _calculus_, which I shall call _x_,
weighing 80 grains, in oystershell lime-water, renewing the lime-water
every day, and keeping it in a heat between 90 and 106 degrees of
Fahrenheit’s scale. After 20 days, I took out the _calculus_; and
having set it by for some days, till it was become quite dry, I brushed
away all the rotten part of it, which was reduced to a kind of chalky
powder, and found that the undissolved part of it weighed 57 grains.
2. At the same time a piece of another _calculus_, _z_, weighing
15 grains, was, after a like infusion of 20 days in oystershell
lime-water, reduced to 10 grains.
3. I put a piece of _z_, weighing 14 grains, in a solution of half an
ounce of the internal part of Spanish soap in nine ounces of water, and
every third day renewed the solution, which was kept in a heat of about
60 degrees. After 14 days, I found the undissolved part not to exceed
11 grains.
4. A piece of a white chalky _calculus_, _y_, weighing 30 grains, had
near 4 grains of its substance dissolved, by being 14 days infused as
above in a solution of soap.
From Nº. 1. above, compared with Dr. Springsfeld’s Exper. (B), it
appears, that the dissolving power of oystershell lime-water is to that
of the Carlsbad water as 23 to 18, supposing the _calculi_ used in
these experiments to have been equally easy to dissolve.
Nº. 3. compared with Dr. Springsfeld’s Exper. (A), shews, that the
dissolving power of a solution of the inner part of Spanish soap, in a
heat of 60 degrees, is to that of the Carlsbad water, in a heat of 96
degrees, as 15 to 14.
From Nº. 4. compared with (A), the dissolving power of soap is to that
of the Carlsbad water only as 4 to 6; but it is probable, that had the
solution of soap been kept in a heat of 96 degrees, its dissolving
power would, even in this experiment, have nearly equalled that of the
Carlsbad water. It may, perhaps, be worth while to observe, that a
piece of the white chalky _calculus_ of Nº 4. was not in the smallest
degree dissolved by lying in lime-water 20 days.
5. In Exper. 19. of my Essay on the Virtue of Lime-water, a piece of
a _calculus_, _b_, weighing 31 grains, lost 7 grains by being infused
36 hours, in a heat of above 100 degrees, in very strong oistershell
lime-water. And in the same water, of a moderate strength, another
piece of _b_ lost, in the same time, 5 grains.
In this last experiment, the lithontriptic virtue of lime-water appears
to be stronger than in Nº. 1. and 2. above; and greatly exceeds that of
the Carlsbad water in Dr. Springsfeld’s Exper. (A) and (B).
But altho’, from what has been said, it appears not only that
lime-water, but also a solution of soap, dissolves the stone in close
vessels as fast, nay faster, than the _thermæ Carolinæ_; yet these last
waters, when the _calculi_ were so placed in open vessels, that the
water from the fountain might constantly flow along them, effected a
much quicker dissolution than lime-water, or even soap-lye, or indeed
any known menstruum, except, perhaps, strong spirit of nitre: for,
in the first experiment made by Dr. Springsfeld, a _calculus_ of two
ounces and a half was, in this manner, quite dissolved in six days.
From this experiment, compared with that of Dr. Springsfeld mentioned
above (B), it will be found, upon calculation, that the dissolving
power of the Carlsbad water, when it is allowed to flow constantly from
the fountain along the stone, is nearly 39 times greater than when it
is only poured fresh on the _calculus_ once a day[202]. What may have
been the reason of this surprising difference of the lithontriptic
power of the Carlsbad water in these different circumstances, I will
not pretend to say. I think it can scarcely be accounted for from the
gentle motion of the water along the surface of the _calculus_. Was it
then owing to some very volatile active part, which the water quickly
loses, after being taken from the fountain?
But how great soever the dissolving power of the Carlsbad waters may
be, when they issue from the bowels of the earth, yet that they do
not communicate a much greater dissolving power to the urine, than
lime-water, will appear from comparing the two following experiments.
In Dr. Springsfeld’s Exper. (A) above, the urine of a person, who
drank the Carlsbad waters, reduced, in 14 days, a piece of _calculus_,
weighing 30 grains, to 25 grains. And in an experiment made by Dr.
Newcome, now Lord Bishop of Llandaff, who drank four English pints of
oystershell lime-water daily, his Lordship’s urine reduced, in four
months, a piece of _calculus_, weighing 31 grains, to three small bits,
weighing in all 6 grains[203]. Whence it follows, that the dissolving
power of his Lordship’s urine must have been to the dissolving power
of the urine of the person who drank the Carlsbad waters nearly as 35
to 65[204]. But if we consider, that the _calculus_ infused in the
urine of the person who drank the Carlsbad waters was kept always in a
heat of 96 degrees, while in Dr. Newcome’s experiment, which was made
during part of the autumn and winter, no artificial heat was used,
it will appear probable, that the dissolving power of his Lordship’s
urine was little inferior to that of the person who drank the Carlsbad
waters; for lime-water, in a heat of 96 degrees, dissolves the
_calculus_ at least twice as fast, as in the common heat of the air in
winter. Further, if it be attended to, that the quantity of Carlsbad
waters drank every day before dinner is from six to eight lib. while
his Lordship only drank four lib. of lime-water in 24 hours, it will
follow, that whatever the different dissolving powers of the lime-water
and Carlsbad waters may be out of the body, yet the former seems, in
proportion to the quantity drank, to communicate at least an equal
dissolving power to the urine.
But without presuming to decide certainly, as to the comparative virtue
of the Carlsbad waters and lime-water, I shall conclude with observing,
that tho’ the Carlsbad waters are less disagreeable to the taste, and
may be drank in larger quantity, than lime-water, yet this last may be
drank equally good in all places, and at all seasons of the year; which
is not the case with the Carlsbad waters.
November 30. 1757.
_An Instance of the Electrical Virtue in the Cure of a Palsy. By Mr._
Patrick Brydone.
[Read Dec. 15, 1757.]
ELizabeth Foster, aged 33, in poor circumstances, unmarried, about 15
years ago was seized with a violent nervous fever, accompanied with an
asthma, and was so ill, that her life was despaired of. She recovered
however from the violence of her distemper, but the sad effects of it
remained. For, from this time, she continued in a weakly uncertain
state of health till the month of July, 1755, when she was again taken
ill of the same kind of fever; and after it went off she was troubled
with worse nervous symptoms than ever, ending at last in a paralytic
disorder, which sometimes affected the arm, sometimes the leg, of
the left side; in such a manner as that these parts, tho’ deprived
of all motion for the time, yet still retained their sensibility. In
this condition she remained till the spring 1756, when unexpectedly
she grew much better; but not so far as to get quite rid of her
paralytic complaints; which, in cold weather, seldom failed to manifest
themselves by a numbness, trembling, sensation of cold, and a loss of
motion in the left side.
This paralytic tendency made her apprehensive of a more violent attack;
which accordingly soon happened: for, about the end of August, in the
same year, her symptoms gradually increased, and in a very short time
she lost all motion and sensation in her left side. In this state
she continued throughout last winter with the addition of some new
complaints; for now her head shook constantly; her tongue faltered so
much, when she attempted to speak, that she could not articulate a
word; her left eye grew so dim, that she could not distinguish colours
with it; and she was often seized with such an universal coldness and
insensibility, that those who saw her at such times scarce knew whether
she was dead or alive.
Whilst the woman was in this miserable condition, observing that she
had some intermissions, during which she could converse and use her
right leg and arm, in one of those intervals I proposed trying to
relieve her by the power of electricity. With this view, I got her
supported in such a manner as to receive the shocks standing, holding
the phial in her right hand, whilst the left was made to touch the
gun-barrel. After receiving several very severe shocks, she found
herself in better spirits than usual; said she felt a heat, and a
prickling pain in her left thigh and leg, which gradually spread over
all that side; and after undergoing the operation for a few minutes
longer, she cried out, with great joy, that she felt her foot on the
ground.
The electrical machine producing such extraordinary effects, the action
was continued; and that day the woman patiently submitted to receive
above 200 shocks from it. The consequence was, that the shaking of
her head gradually decreased, till it intirely ceased; that she was
able at last to stand without any support; and on leaving the room
quite forgot one of her crutches, and walked to the kitchin with very
little assistance from the other. That night she continued to be well
and slept better than she had done for several months before, only
about midnight she was seized with a faintishness, and took notice
of a strong sulphureous taste in her mouth; but both faintness and
that taste went off, upon drinking a little water. Next day, being
electrised as before, her strength sensibly increased during the
operation, and when that was over she walked easily with a stick, and
could lift several pounds weight with her left hand, which had been so
long paralytic before. The experiment was repeated on the third day;
by which time she had received in all upwards of 600 severe shocks.
She then telling us that she had as much power in the side that had
been affected as in the other, we believed it unnecessary to proceed
farther as the electricity had already, to all appearance produced a
compleat cure. And indeed the patient continued to be well till the
Sunday following, _viz_. about three days after the last operation; but
upon going that day to church, she probably catched cold; for on Monday
she complained of a numbness in her left hand and foot; but, upon being
again electrised, every symptom vanished, and she has been perfectly
well ever since.
Coldingham, Nov. 1757.
Patrick Brydone.
That the above is a true and exact account of my case, and of the late
wonderful cure wrought on me, is attested by
Elizabeth Foster.
I was eye witness to the electrical experiments made by my son on
Elizabeth Foster, and saw with pleasure their happy effects. By the
blessing of God accompanying them, from a weak, miserable, and at
sometimes almost an insensible state, she was, in a very short time,
restored to health and strength; of which the above is in every respect
a true account.
Robert Brydone,
Minister of Coldingham.
_Extract of a Letter from Dr._ Whytt _to Dr._ Pringle, _relating to
this Account: Dated_ Edinburgh, _1 Dec. 1757_.
SOME days ago I had transmitted to me Mr. Brydone’s account (inclosed)
of the success of the electrical shocks in a paralytic patient,
attested by the patient herself, and by Mr. Brydone’s father, who is
minister at Coldingham, in the shire of Berwick. At the same time I
had a letter from the Reverend Mr. Allan, Minister of Eymouth (in
the neighbourhood), informing me, that he had examined the patient
particularly, and found Mr. Brydone’s account to be perfectly true.
He further informs me, that he never observed the electrical shock
so strong from any machine, as from Mr. Brydone’s. It seems, that
gentleman has not only applied himself to the study of natural
philosophy, but also of medicine.
Robert Whytt.
LI. _An Account of some fossile Fruits, and other Bodies, found in the
Island of_ Shepey. _By_ James Parsons, _M.D. F.R.S._
_To the Right Honourable the_ EARL _of_ MACCLESFIELD, President _of
the_ Royal Society.
[Read Dec. 15, 1757.]
Sept. 25, 1757.
My Lord,
BEING ever desirous to promote the business of this learned Society,
I could not lose the opportunity that presented, of laying before
you an account, and drawings (_See_ TAB. XV. _&_ XVI.), of a most
curious parcel of fossil fruits, and some other bodies, sent me from
Shepey-Island, by my ingenious friend Mr. Jacob, of Faversham, Surgeon,
and Fellow of the Antiquary Society.
I do not remember, that fossil seeds, or fruits, are recorded in our
Transactions, tho’ many of other kinds have places in them; nor indeed
that the memoirs of other academies have made mention of any such
fruits; and therefore, as these are chiefly pyritical, and consequently
liable to fall to pieces, I thought it necessary to make drawings of
them while in a sound state, in order for engraving, if the Society
shall think fit; lest their being so subject to moulder away might put
it out of my power to preserve their forms. However, I have great hopes
I shall be able to preserve the greater part of them intire till they
are shewed to the Society.
In describing these bodies, we shall be obliged to make the best
conjectures we can of some of them only; for several are sufficiently
obvious to every naturalist, and easily known by comparing them to
such recent fruits, as are frequent enough among us. Some of them are
absolutely exotics; and indeed they are all rare and curious, and, in
my humble opinion, well worth the notice of the Royal Society.
Doctor Woodward’s catalogue[205], which is so ample and full of all
kinds of fossil bodies, has only a very few fruits; and these are
only some hazle nuts found in different places, a few pine-cones, and
laryxes; and one fruit, which was taken for an unripe nutmeg. In this
collection before us they are all very different, and such as have not
been seen before.
It will not be amiss, in this place, to give a short detail of such
bodies as are capable of either being petrified themselves, or of
leaving their impressions in stony matter. By being petrified, is meant
being impregnated with stony, pyritical, or any other metalline or
sparry matter; for there are inumerable specimens, wherein all these
are apparent.
TESTACEOUS _and_ CRUSTACEOUS ANIMALS.
The shelly matter of these is of so compact and dry a nature, that
they will endure for ages: and if in a soil or bed where moisture
has access, they will receive stony matter into their pores, and
become ponderous in proportion to the quantity imbibed. If in a dry
place, they will remain fair and sharp, suffering very little change
by any length of time; whilst the flesh of these, being subject to
putrifaction, is soon destroyed; and yet, according to circumstances
that happen, some of these may be replaced in due form by stony
particles. I have a gryphites, with the form of the fish in its place,
as is the case in several of the oyster kinds. This may be occasioned
by the shells being close, or nearly so, and stony matter gradually
insinuating into their cavity, so as to fill up the whole.