Page:Popular Science Monthly Volume 50.djvu/830

808 so well shown in many of the pictures, is characteristic for Tipsy and Bum. It can be lightened up at times so as hardly to be recognized, but still it is the prevailing tone.

Neither of the pair, however, even yet lacks spirit, when it comes to maintaining their rights in the kennel; and for months after their characteristic timidity was noticed both Tipsy and Bum were larger and stronger than their mates, and held the balance of power.

Jealousy, amounting almost to frenzy, has been a striking feature in both the Topsys. They both showed great distress, especially when I petted Tipsy. Nig has something of the same kind strongly developed, but is too noble to show any spite toward the other dog. However, if he is around and I stoop to pat Bum on the head. Nig generally manages to get his head there in time to catch the pat. So I am obliged to use both hands, and Bum has never given evidence of the least jealousy even



under Nig's provoking interference. Nor has Tipsy ever evinced a trace of the emotion.

The development of intelligence is a wide field in which it will be possible to touch but a few points.

At first I had intended to test this by ability to learn tricks. The idea was abandoned for two reasons. First, it would absorb too much of my time; and, second, after reading Mr. Russell's paper on child study, I decided that it was just the thing not to do. By that method we might have learned trick psychology when the thing of real value for us is the spontaneous, uninterfered-with psychic growth of a dog.

Some few things had to be taught, such as coming at call and whistle and individual names, and retrieving was taught for a special purpose to be mentioned later. In addition to this,