Does flipper of a dolphin have same bones as arm of a man?
How many thumbs has a chimpanzee? Which is more specialized, the foot of a man or that of a chimpanzee? Is the foot of a man or that of a chimpanzee better suited for supporting weight? How does its construction fit it for this?
Which has a better hand, a man or a chimpanzee? What is the difference in their arms? Does difference in structure correspond to difference in use?
Which of the seven skeletons bears the most complex breastbone?
Which skeleton bears no neck (or cervical) vertebræ? Which bears only one?
Are all the classes of vertebrates represented in this chart? (p. [125].)
Fig. 401.—Sacred Monkey of India (Semnopithecus entellus). × ¹⁄₁₂.
Fig. 402.—Lemur (Lemur Mongoz). × ⅒. Which digit bears a claw?