ANATOMY. 
g , Part of the facro lumbalis. h, Serratus magnus. i, The 
broad tendon by which the latifiimus dorfi begins, and from 
which the tendon of the fen'atus pofticus inferior is infe- 
parable. k, Part of the obliquus interims afcendens ab¬ 
dominis. I, The fphindter ani, fixed to the point of the 
os coccygis; at the fide.of which the cpccygseus, and a 
portion of the levato -- ani, are feen ; and lower down, op- 
pofite to /, part of the tranfverfalis penis. 
Superior Extremity, a, Supra-fpinatus. b, Infra- 
fpinatus. c. Teres minor, d, Teres major, c, Triceps 
extenfor cubiti. f. Its head, called longus. g, The bre¬ 
vis: and, h, A fmall portion of the third head, named 
brachialis externus. i, The tendon of the triceps, inferted 
into the olecranon, k, Part of the brachialis internus. 
I, Anconams, which feerns to be continued from that part 
of the bracialis externus immediately above it. m, Ex¬ 
tenfor carpi radialis longior; and beneath it, the brevior: 
both are feen at the wrift, inferted into the metacarpal bones 
of the fore and middle fingers. ”, Flexor carpi ulnaris. 
o. Part of the radii brevis, p, Extenfor ofTis metacarpi 
pollicis manus. q, Extenfor primi internodii pollicis ma¬ 
ntis. r, Extenfor fecundi internodii pollicis manus. s, In¬ 
dicator, inferted into the root of the firftjoint of the fore¬ 
finger. t, One of the three external interolfei manus: the 
other two are diftinttly feen without letters, u, One of 
the tendons of the extenlors of the fingers cut; and the 
fame is feen in each of the other three fingers, joining 
with the tendons and aponeurofes of the interolfei and 
lumbricales, and fpread upon the back of the fingers. On 
the right hand, part of the flexors of the fingers, the ab- 
dmStor pollicis and minimi digiti, are feen. 
Inferior Extremity, a, Glutaeus medius. b, Py- 
riformis. c, The two mufcles called gemini , between which 
the tendon and flelhy belly of the obturator internus palfes 
over the tuberofity of the os ifchium, are feen within the 
pelvis, partly covered by the coccygieus. and levator ani. 
d, Quadratus femoris. e, Vaftus externus. f, f Parts 
of the triceps magnus. g, Long head of the triceps flexor 
cruris, and beneath it part of the fliort head is feen. h, Se- 
mi-tendinofus, and beneath it parts of the femi-membra- 
nofus are feen on each fide of it. i, Gracilis, h, A fmall 
portion of the vaftus internus. I , Poplitams. m. The 
flefhy belly of the plantaris ; and its long fender tendon is 
feen palling over the infide of the folasus. n, Solaeus. 
o, The place where the tendon of the gemellus was cut 
oft'; but the flefli of the folaeus runs farther down, p, Ten- 
do Achillis, with the plantaris. q , Peronseus longus, paf- 
fing at the outer ankle to the foie of the foot; beneath it, 
the peronseus brevis to the root of the metatarfal bone of 
the little toe; and, between it and the tendo Achillis, a 
portion of the flexor longus digitorum pedis, r, Tendons 
of the extenfor longus digitorum pedis, with the peronaeus 
tertius; and beneath thefe, the extenfor brevis digitorum 
pedis, s, Flexor brevis minimi digiti pedis. 
. Plate IV. reprefents a Front and Back View of theTniRD 
Layer of the Muscles, with fome of the Ligaments, 
Cartilages, and naked Bones. 
FRONT VIEW. 
Muscles on the Head and Neck, a, Depreflbr labii 
fuperioris alaeque nafi. b, Orbicularis oris, after moft of 
the mufcles, which are fixed to it, and aflift to form it, 
have been taken away, c, Buccinator : above c , part of 
the pterygoidams externus is feen palling behind the co- 
ronoid procefs of the lower jaw. d, Levator labii infe- 
rioris. e, Sterno-thyroidasus: immediately above, and 
feemingly the continuation of it, the lyyo-thyroidams. 
f, Scalenus anticus: contiguous to it, on the infide, the 
fcalenus medius: above it, a portion of the trachelo-maf- 
toidieus : between the fcalenus anticus, and fterno-thyroi- 
daeus, and hyo-thyroidaeus, the re6tus capitis anterius 
major, and longus colli. 
Trunk, a, Third row of external intercoftal mufcles: 
the reft appear in the fame manner between the other ribs. 
Vol. 1 . No. 37. 
b, Third row of internal intercoftal mufcles: the reft ap¬ 
pear between the other ribs, c, Tranfverfalis abdominis. 
d, The place from which the inferior part of the tendon 
of the tranfverfalis, that palfes befare the rectus and py- 
ramidalis mufcles, is cut off: between thefe portions of 
each fide, the peritonaeum is laid bare, and the ligaments 
of the bladder which were formerly the umbilical arteries 
and urachus: between this portion and the os pubis, the 
fpermatic cord is feen cut. e, The inferior edge of the 
upper part of the tendon of the tranfverfalis, which palfes 
behind the reflus, and immediately adheres to the peri¬ 
tonaeum. /, The anterior lamella of the internal oblique, 
which joined the tendon of the external to pafs over the 
reiftus: between f and g, the pofterior lamella of the in¬ 
ternal oblique, joining with the tendon of the tranfverfalis, 
to pafs behind the rettus. g, The place at the linea alba, 
from which the tendon of the external oblique, and ante¬ 
rior lamella of the internal, were cut oft': at g, Umbilicus. 
Superior Extremity, a, Subfcapularis. b, Teres- 
minor. c, Coraco-brachialis: the part from which the 
fliort head of the biceps flexor cubiti was cut off from it, 
is feen at its upper end. d, Brachialis internus. e, Bra¬ 
chialis externus, or third head of the triceps, f, Extenfor 
carpi radialis longior; and with it the extenfor carpi radi¬ 
alis brevior; both thefe are diftiniftly feen in the right 
hand: between the tendon of the brachialis internus and 
extenfor radialis, the fupinator radii brevis is feen. g, Flex¬ 
or longus pollicis manus, with the flelhy portion of it which 
arifes from the internal condyle of the os humeri, h, Flexor 
profundus perforans, which fplits into four tendons, which 
pafs under the ligamentum carpi annulare, i, Pronator 
quadratus. k, Addutftor minimi digiti manus. /, One of 
the lumbricales: the other three appear in the fame man¬ 
ner, along the tendons of the flexor profundus: behind 
thefe, the internal interolfei are feen. 
Inferior Extremity, a, Glutasus minimus, b, Ili- 
acus internus: on the infide of it, between b and c, the 
pfoas magnus. c, Obturator externus. d, Adduflor bre¬ 
vis femoris. e, Addudfor magnus femoris. f Gracilis, 
which is feen inferted into the infide of the head., of the 
tibia, g, The fliort head of the biceps flexor cruris. 
h, Peronaeus longus. z, Peronaeus brevis : between thef® 
two peronaei and tibia, the tibialis pofticus is feen. k, Ten¬ 
don of the tibialis pofticus, covering the tendon of the 
flexor longus digitorum pedis. /, Extenfor brevis dig!— 
torum pedis. __ 
BACK VIEW. 
Muscles on the Head and Neck, a. Part of the 
buccinator, b, Complexus. c, Trachelo-maftoidaeus; on 
the outfide of it, the tranfverfalis colli, d, Scalenus me¬ 
dius. e, Scalenus pofticus. 
Trunk, a. Spinalis dorfi; and beneath it, the multi- 
fidus fpinte. b, Longiliimus dorfi, which fends off a flelhy 
flip to the trachelo-maftoidseus. c, Sacro lumbalis, with 
the cervicalis defcendens fent oft' from it along the fide of 
the neck, and outfide of the tranfverfalis colli, d, Semi- 
fpinalis dorfi. e, Tranfverfalis abdominis. The fpaces 
between the fpinous proceffes of the vertebrae have muf- 
cular fafciculi between them, particularly thole of the 
neck: and are named interfpinales colli, dorfi, and lumbo - 
rum ; but thofe of the back feem to be tendinous and liga¬ 
mentous. 
Superior Extremity, a, Teres major, b, Part of 
the coraco-brachialis. c, Part of the brachialis internus. 
d, The third head of the triceps extenfor cubiti, called 
brachialis externus, after the longus and brevis have been 
cut off. e, Extenfor radialis longior. f, Extenfor radia¬ 
lis brevior. g, Part of the flexor profundus perforans. 
h, Supinator radii brevis, i, Part of the adduffor pollicis 
manus. k. One of the three external interolfei; the other 
two may be eafily diftinguilhed without letters. /, Tendons 
of the extenfors of the fingers, joining with thofe of the 
lumbricales and interolfei, wdiich form a tendinous expan- 
fion on the back of the four fingers. On the right hand, 
7 I part 
