The American magpie talks beautifully; but I regret to say that I do not understand a word of its language. One summer we had several fine specimens in the great flying-cage, with the big and showy waterfowl, condor, griffon vulture, ravens and crows. One of those magpies often came over to the side of the cage to talk to me, and as I believe, make complaints. Whether he complained about his big and bulky cagemates, or the keepers, or me, I could not tell; but I thought that his grievances were against the large birds. Whenever I climbed over the guard rail and stooped down, he would come close up to the wire, stand in one spot, and in a quiet, confidential tone talk to me earnestly and gesticulate with his head for five minutes straight. I have heard senile old men run on in low-voiced, unintelligible clack in precisely the same way. The modulations of that bird's voice, its inflections and its vocabulary were wonderful. From his manner a messenger from Mars might easily have inferred that the bird believed that every word of the discourse was fully understood. The lion roars, magnificently. The hyena "laughs"; the gray wolf gives a mournful howl, the coyote barks and howls, and the fox yaps. The elk bugles, the moose roars and bawls, in desire or defiance. The elephant trumpets or screams in the joy of good feeding, or in fear or rage; and it also rumbles deeply away down in its throat. The red squirrel barks and chatters, usually to scold some one whom he hates, but other small rodents know that silence is golden. The birds have the best voices of all creatures. They are the sweet singers of the animal world, and to the inquiring mind that field is a wonderland. The frogs are vociferous; and now if they were more silent they would last longer. Of all the reptiles known to me, only two utter vocal sounds,--the alligator and the elephant tortoise. The former roars or bellows, the latter grunts. IV THE MOST INTELLIGENT ANIMALS To the professional animal-man, year in and year out comes the eternal question, "Which are the most intelligent animals?" The question is entirely legitimate. What animals are the best exponents of animal intelligence? It seems to me that the numerous factors involved, and the comparisons that must be made, can best be expressed in figures. Opinions that are based upon only one or two sets of facts are not worth much. There are about ten factors to be taken into account and appraised separately.