ANATOMY. 
«. A triangular flap of the fleshy side of 
the ventricle turned back to expose the 
cavity. 
b. Column* caraese of the heart. 
c. Tricuspidal valve. 
d. The three semilunar valves in the 
mouth of the pulmonary artery, which is 
slit open. 
e. e. Cut edges of the ventricle. 
Fig. 3. View of the cavity of the left ventricle 
and mouth of the aorta. 
n. a. Cut edges of the ventricle. 
b. Column® carnete. 
c. Chord® tendineae. 
d. Mitral valve. 
e. Semilunar valves of the aorta. 
Plate II. 
Fig. 1. Back view of the skeleton, 
1, 2. Ossa parietalia. 
3. Os occipitis. 
4. Os tetaporis. 
5. Mastoid process of the temporal bone. 
6. The seven, cervical vertebra;, 
7. The twelve dorsal vertebra. 
8. The five lumbar vertebra. 
It. Os sacrum, or rump-bone. 
12. Os coccygis, or crupper bone. 
13. Ilium. 
9. Ischium. 
14. Neck of the thigh-bone. 
15. Trochanter major. 
16 . Trochanter minor. 
17. Condyles of the thigh, 
18. Malleolus externus. 
19. Malleolus interims. 
20. Os calcis. 
Fig. 2. The small hones contained in the 
tympanum of the ear. 
1. Malleus. 
2. Incus. 
3. Os orbiculare. 
4. Stapes. 
Fig. 3. A view of the same bones as joined 
to each other, and as connected to the mem- 
brand tympani. 
e. Membrana tympani with the handle 
®f the malleus connected. 
f Head of the malleus joined to 
g, which is the body of the incus. 
h. Base of the stapes. 
Fig. 4. A view of the labyrinth of the ear. 
a. Three semicircular canals unopened. 
b. Section of the cochlea, 
e. Auditory nerve. 
d. Branches of the nerve going to the 
vestibulum and semicircular canals. 
e. Trunk of the nerve most beautifully 
ramified on the solid axis, and projecting 
bony plate of the cochlea. 
Fig. 5. Second view of the labyrinth ; re- 
presenting the vestibulum and semicircular 
canals laid open, and the branches of the au- 
ditory nerve terminating on those parts. 
a. Cavity of the vestibulum. 
Plate III. 
Fig. 1 . A front view of the muscles. 
The right side of the figure represents 
the first or most superficial stratum ; on the 
left side the second layer is exhibited. It 
would be impossible to refer to all the mus- 
cles exhibited in this and the following 
muscular plates : we must therefore confine 
ourselves to the more obvious and important 
ones. 
a. Orbicularis palpebrarum. 
b. Orbicularis oris. 
c. Zygomatici. 
d. Stern o-cleidomastoideus, 
1 . Platysma myoides. 
2. Pectoralis major. 
e. Latissimus dorsi. 
3. Obliquus externus abdominis,. 
4. Rectus abdominis. 
+■ Pectoralis minor. 
f. Serratus anticus. 
g. Obliquus intern us abdominis. 
5. Deltoid muscle- 
6. Biceps flexor -cubiti. 
h. Supinator radii longus. 
i. Pronator radii teres. 
k- Flexor carpi radiali-s. 
l. Extensors of the thumb. 
m, n. Two heads of the biceps flexor 
cubiti. 
o. Opponens pollicis. 
p. Muscles of the little Anger. 
q. Flexor tendons of the fingers. 
r. Flexor digitorum profundus, 
s. Flexor longus pollicis. 
7. Tensor vaginas femoris. 
8. Sartorius. 
9. Vastus externus. 
10. Rectus extensor femoris, 
11. Vastus internus, 
12. Tibialis anticus. 
13. Extensor muscles of the toes. 
14. Extensor tendons of the toes. 
Fig. 2 . Posterior surface of the eyelids, with 
the lacrymal gland. 
a, b. Posterior suriace of the eyelids, 
