SKELETON OF THE DOG. 347 
THE LEFT ANTERIOR EXTREMITY. 
1. The scapula, or shoulder-blade. 11. Os metacarpi digiti quarti—fourth 
2. Os humeri, or arm-bone, metacarpal. 
3. Radius—the lesser bone of the arm. 12. Os metacarpi digiti quinti. 
4. The elbow, or olecranon process of 13, 13, 13, 13. The first phalanges of the 
the ulna, fore-feet. 
7. Os pisiforme, or pisiform bone. 14, 14, 14, 14. The second ditto. 
Io, 
Os metacarpi digiti tertii—the third 15. The third ditto, 
metacarpal bone. 16, The sesamoid bone. 
THE RIGHT ANTERIOR EXTREMITY. 
Radius. 
1 9. Ossa metacarpi digitorum quatuor 
2, Ulna, —the four bones of the meta- 
3. Os triquetrum—the triangular bone. carpus. , 
5. Os semilunare—the semilunar bone. to. Phalanx prima pollicis—first phalange 
6. Os multangulum majus—the larger of the thumb. 
multangular bone. zz. Phalanx tertia pollicis—third phalange 
7. Os multangulum minus—the small of ditto. ‘ 
multangular bone. x2, Digiti quatuor—phalanges of the four 
8. Os metacarpi pollicis—the thumb. toes. 
THE LEFT POSTERIOR EXTREMITY. 
1, 1. Os femoris—thigh-bone. g. Os cuneiforme tertium et maximum. 
2. Patella—the knee-pan. to. Os metatarsi digiti quarti. 
3, 3. Tibia—the shank of the leg. rz. Os metatarsi digiti tertii. 
4, 4. Fibula—tbe small bone of ditto. 12. Os metatarsi digiti secundi. 
5. Os calcis—the heel. 13. Os metaiarsi digiti primi. 
6. Astragalus—one of the sevenbonesof 14. Phalanges prime digitorum pedis. 
the tarsus. 15. Phalanges secunde digitorum pedis. 
7. Os naviculare—the navicular bone. 16. Phalanges tertiz digitorum pedis. 
8. Os cuboideum—or cubic bone. 17. Os sesamoideum—the sesamoid. 
THE RIGHT POSTERIOR EXTREMITY. 
1. Os femoris—the thigh-bone. tx. Os cuneiforme secundum et mini- 
z, Patella—the knee-pan. mum, 
3. Tibia—the shank of the leg. z2, Rudimentum ossis metatarsi hallucis, 
4. Os calcis—the heel-bone. 13. Os metatarsi digiti primi. ‘ 
5. Astragalus—one of the seven bones of 14. Os metatarsi digiti secundi. 
' the tarsus. 15. Os metatarsi digiti tertii, 
7. Os naviculare—the navieular bone. 16, Phalanges prime digitorum. ; 
8. Os cuneiforme primum et medium. 17. Phalanges secundze digitorum pedis. 
g. Os cuboideum, or eubic bone. 18. Phalanges tertie digitorum pedis. 
10, Os cuneiforme tertium et maximum 1g. Os sesamoideum—the sesamoid. 
