7 DECEMBER 1912, Page 10

tions of different parts of their bodies-eyes, ears, teeth, feet,

tails. In each case he gives the scientific reason for this or that property or capability, as, for instance, the power of directing hearing in the elephant's huge ears, the balancing tail of the squirrel, the contracting pupil of the cat's eye, and so on. A correspondent informs Mr. Brearley that astronomers occasionally treat their eyes with atropin during a .total eclipse of the sun in order to be able to see more clearly with the enlarged pupil.