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such as the oil of aspics, spirit of wine, or oil of turpentine, &c., mixed with some colour, generally red or blue ; and thick, which consists of wax, resin, Venice turpentine, lard, and oil, also coloured blue or red. Quick-filver, and fat oils are like wise used for this purpose. The red colouring ingredients are carmine, cinaber, Brasil-wood and vermilion; the blue are, Pruffian blue, Indian blue, blue alhes, indigo, and ivory black, &c. If
intend to colour the liquor yellow, the best in- . gredients are gutta gamba, la grain d'Avignon, or Lorraine earth. For the fine injection, the mixture generally used, is that of fpirit of turpentine with vermilion. The first thing necessary to be observed is the choice of your subject, which ought to be neither old, nor fat. You will generally succeed best in a subject about three feet in length.
Having thus made choice of a proper subject, you begin by shaving and washing it all over with warm water. If the weather be cold, you are to bathe the body in hot though not boiling water. If you intend to inject all the arteries at one ftroke of the piston, except the pulmonary artery, you begin by making a longitudinal incision from the upper part of the sternum to the xyphoid cartilage, continuing it below the left breast as far as four or five fingers breadth from the sternum. Having then detached the skin, the fat, and the great pectoral muscle, you open the thorax, by cutting through three or four of the cartilages of the first ribs, taking care not to cut the internal arteria mamaria. If it should be cut, you are to make a ligature.
The thorax being thus opened, you discover the pericardium, through which you make a crucial incision, in order to : come at the pulmonary artery and the aorta, which you are to separate one from the other, paffing a waxed thread, of many doubles, round the latter, into which you now make an orifice large enough to admit your tube. If there should be any coagulated blood or lymph, it must be first cleared away. The tube being introduced, the artery must be tied fast round it, so as not to flip when you come to inject.
If you want to inject the veins, you are to introduce your tube near their extremity, as in the saphena salvatella, or cephalica of the thumb. Veins may also be injected from the trunk to the branches, as in the vena porta; but this succeeds only where there are few or no valves. If you intend to inject some detached part of the body, the vessels which are cut through must be carefully tied before you begin.
• The method of preparing your injection is as follows, If your subject be four or five feet in length, take an ounce of vermillion, and pour on to it as much spirit of turpentine, or other liquor above mentioned, as will wet it entirely, mixing it well with a pencil, or spatula. Then pour on about fix or eight ounces more of the same spirit, stirring the whole til? it is uniformly mixed. This must not be injected till your thicker composition is ready: the preparation of which is as follows: Take fix ounces of yellow or white wax, as much Venice turpentine, two ounces and a half of oil of olives, four ounces of lard, and one pound of mutton fuet. Boil them on a flow fire, pass them through a linen rag, and then add four drachms of vermillion. With regard to the degree of ; heat, which is a matter of great importance, let it be such as. that you can just bear your finger in it, and so as not to stick to the nail.
The chief instrument in this operation is the fyringe, the size of which must be proportioned to your subject, and its. snout must fix exactly into the tube, which must have a notch near its smaller end to prevent its flipping.
If your fyringe happens not to be large enough to fill all the vessels at once, you immediately turn the cock, or if a tube, you stop it instantly, till you have again filled your fyringe, which must be done with all posible expedition ; you then fix your syringe afresh, and inject till you perceive the piston resisted by the liquor, which is a proof that the vessels are full. This resistance however happens only in filling the arteries. It happens rarely that the vena porta is filled by in-: jecting the vena cava, which therefore must be done by intro-. ducing your tube into a branch of the mesenterics; but in doing this you are to make two ligatures, one round the tube, and the other below the orifice, otherwise
you will not fucceed.
The sinus's on the base of the cranium are injected, either from the angular vein, or the vertebrales. Sometimes they will be found filled by injecting the internal jugulars.
«The thoracic duct and receptaculum chyli, may be injected, either through some large lymphatic, veslel, or by opening the duct itself. The puncta lacrymalia and the nasal canal, either from the nose, or by introducing a tube into the pueta themselves.'
This article, we conceive, will be sufficient as a specimen of our Author's manner. He appears upon the whole to be acquainted with the present state of anatomy and physiology ; but we cannot help observing, that in many places he is unnelsarily prolix and.sautological ; and that a confiderable number of his articles are totally unconnected either with physiology or anatomy.
B... Most of the Books mentioned in this Appendix, have been impsited by niefrs. Becket and Dc Hondt, in the Strand.
N. B. To find any particular Book, or Pamphlet, see the
Table of Contents, prefixed to the Volume.
BETHLEHEM, present state of that
united in one
great plan, 203, The Catch-
ly censured, 314.
liament as representatives of the
mium on his character, 443. peers of the realm, 98.
lour, 170, Composition of that
account of, IL Plan for medi. black paint with water, 174;
four latt years of her reign, and galls, logwood, vitriol, 281.
Of dying folk black, 283. Of
linnen and cotton, 284.
BOL INGBROKE Lord, his dispute
BOTANY, its usefulness, 127.
letter relating to the Thunder- delicacy of the inhabitants, 422.
Brown, Dr. his defence of him-
529. Various kinds of, and cuBullinger's Confession of Faith,
rious stories related of them, ib. 55.1.
Books and the 39 articles, curious enquiry
a work of authority, 337;
61, Cure of, 62.
Airo, in Egypt, described,
132. Serpents there, how
468-472. The bashing there defcribed, 134. Account of the
Cardinal Pole, account of, 296. several, 494, 495:
CANCER, pinnotheris, defends the
city against the Author of a trea- fith, 269.
of the second rule relating to the liable, and what prospect there
doctrine of Chances, 226. put is of its continuance, 195. Mon-
curioas account of truction, 201. Dr. Blacktone's
idea of it, 379.
far the Disenters are dangerous 351.
Corn, bounty on, advantages of,
def- fide of the question, 311. Mo-
166. Translated, 167.
the heathen emperors, 436. Ra. tion of that plant, 270.
speech, 42. Answered. 43.
their errors and virtues, 437. 265.
to the dangers to which it is li- of, how curtailed since the reign
nuously recommended, 229. of, how greatly extended of late,
by the national debt, by the taxes,
of the revenue, 390.
taxing them discussed, 65; their cally represented, 406.
with Buffon in the Natural Hi-
Proper representation of, 160. goodness, the peculiar attribute,
ment, their great influence in pre- mot concerns us to have just
the doctrine of diabolism, 327.
blishment of, by church-autho- the Scripture account of him mult
be understood figuratively, 328.
government how gradually im- ftory of him, in regard to Christ's
DISSENTERS, not dangerous to FLORIDA, fome account of, 12,
the established church of Eng- FORNICATION confidered, 87.
stated forms of worship, 257. in that kingdom, 421. Dir. DIVORCES, advantages of render- agreeable view of that country, ing easily attainable, 263.
429. Dock-YARDS, royal, greac wafe Freedom of speech and writing of the timber in, 396.
on public affairs confidered, 392. DODDRIDGE, Dr. his genius and French, their indelicacy' at their
learning. 147; his amazing di-
ANGLIONS of the nerves,
GENERATION, beyond the reach ARTHQUAKE, extract from
of human enquiry, 497. archbilhop Secker's fermon GEORGE III. parallel between the on, 345
four first years of his reign, and EDUCATION, important remarks the four last of Anne, 325. on, 306.
GIBBON, a curious species of ape, ENGLAND, general view of her defcription of, 531.
policy, trade, taxes, &c. 291. GOSPEL, St. Matthew's, date of ENGLISH, nation, follies of, 507. ,
fettled, 402. Epictetus, the stoic, his con- Goths, their origin, and incursions
tempt of the Christians, 37. into the Empire, 534. EQUALITY of mankind, enco- Government, considerations on
mium on, 22; an imaginary leveral kinds of, 380. Conftiblefling 23.
tutional, of England, dependent ERSKINE's gospel fonnets, re. in the ultimate resort, on the markable extract from, 168,
sense and feeling of the people, Ethics, or the law of nature, first 387. Executive power of, 389. principles of, 109.
How to be employed for the reEvil, origin of, difficulty of account- formation of mankind, 543.
ing for, 307. Alcribed to the Grey, Stephen, elegant verses on agency of malignant spirits, 308.
his death, 357 Alth, inquiry into the true
H. nature of, 203.
AKKAM, Caliph, remarkable FANCY, her exhortation to her
ftory of, 495 votaries, 118.
HASSELQUIST, Dr. his travels in
their single ftate, 454. Defects ter, 128; his adventure at Grand
HEMLOCK, extract of, 63, FERGUSON, James, his descrip. HENRIAD, of Voltaire, confider'd tion of a new crane, 220.
His as a fermon, 341. new hygrometer, 222.
HENRY VIII. his mistaken policy, Fever, not a difeafe, but a remedy, in order to make the crown ab. 30–31.
folate, 189, 191. FLORETTA, Nory of, 357.
the Great of France, his