we ifh HORSE. 
a tricipital muscle, for it has three distinct insertions. Again, Mr. 
Percivail describes the rectus as a separate muscle from the two vasti and 
crureus, and appends a fifth, to which he gives the name of rectus parvus. 
This appears to correspond with the gréle antérieur of Chauveau, and, if 
Fig. 6.—View OF THE EXreRNAL MUSCLES OF THE HAUNCH AND THIGH. 
1. Giuteus maximus. 8. Extensor pedis, 
2. Gluteus externus. 9. Peroneus. 
3. Tensor vagine femoris. 10. Plantaris. 
4. Vastus externus. 11. Gastrocnemius internus. 
5. 5, 5. Triceps abductor femoris. 12. Gastrocnemius externus. 
6, 7. Biceps rotator tibialis, or semi-membra- 
nosus and semi-tendinosus, 
the analogy of human anatomy is to be taken as a guide, it should 
properly be described as the crureus. By adopting the same plan as with 
the muscles of the shoulder joint, the student will be able to ascertain at 
a glance to which description, in the two authorities I have quoted, each 
particular musele can be referred. 
