[IP]Mr. W. Larden states, in Nature (vol. xlii.), that his brother extracted, from the oviduct of a Vivora de la Cruz snake in the West Indies, two young snakelets six inches long. Both, though thus from their mother's oviduct untimely ripped, threatened to strike, and made the burring noise with the tail, characteristic of the snake.
[IQ]Dr. McCook confirms the observation that the clearings are kept clean, that the ant-rice alone is permitted to grow on them, and that the produce of this crop is carefully harvested; but he thinks that the ant-rice sows itself, and is not actually planted by the ants (see Sir John Lubbock's "Scientific Lectures," 2nd edit., p. 112).
[IR]The experiments, both of Sir John Lubbock and Mr. Romanes, show that the homing instinct of bees is largely the result of individual observation. Taken to the seashore at no great distance from the hive, where the objects around them, however, were unfamiliar (since the seashore is not the place where flowers and nectar are to be found), the bees were nonplussed and lost their way. Similarly, the migration of birds "is now," according to Mr. Wallace, "well ascertained to be effected by means of vision, long flights being made on bright moonlight nights, when the birds fly very high, while on cloudy nights they fly low, and then often lose their way" ("Darwinism," p. 442). This, of course, does not explain the migratory instinct—the internal prompting to migrate—but it indicates that the carrying out of the migratory impulse is, in part at least, intelligent.
[IS]"Animal Intelligence," p. 59.
[IT]The American expression, "I guess," is often far truer to fact than its English equivalent, "I think."
[IU]"Mental Evolution in Animals," pp. 73, 74.
[IV]"Mental Evolution in Animals," p. 177.
[IW]Nature, vol. xxviii. p. 271, quoted in "Mental Evolution in Animals," footnote, p. 196.
[IX]"Organic Evolution," pp. 223, 224.
[IY]Ibid. p. 263.