396 POPULAR SCIENCE MONTHLY. 



I made a cage for the lizards of iron wire, open above, and, hav- 

 ing a large room in my country house into which the sun shone 

 all day on three sides, I put them in it. Pierre soon learned to 

 leave his cage, to climb up to the windows by some rags I had 

 hung to them, and passed from one to another, following the sun. 

 In the evening he returned to the cage. Pedro, more stupid, tried 

 vainly to get out of his prison, and, when I put him on the ledge 

 of a window in the sun, let himself be overtaken by the shade, 

 persisted for hours in efforts to get through the glass, and finally 

 went to sleei^ where he had been left. Pierre, always in motion 

 and investigating, discovered an old mattress in the room that 

 had a hole in the cover, and took a liking to the hole. The mat- 

 tress was put where it could not be reached except over a bridge 

 of cords connecting it with the cage. Pierre, always expert, 

 learned very soon to pass over this bridge to his hiding place. 

 Pedro never could understand what the cords were good for, and 

 his love of comfort never carried him to the point of finding the 

 luxurious mattress. More recently Pierre, when at Lidge, found 

 a hole in the lining of a thick portiere curtain, of which he be- 

 came acquainted with the most minute folds and turns, and when 

 he is there there is no means of getting him away. 



The physiognomies of the two correspond with their charac- 

 ters. Pierre's eye is black, mild, intelligent, and scrutinizing. In 

 Pedro's, the pupil, surrounded with a golden yellow circle, reflects 

 distrust, hostility, and ferocity. It took six months to tame 

 Pedro, and it was quite two years before he ceased to show his 

 fierce temper when I came upon him too abruptly. 



Pierre and Pedro lived on the best of terms with one another. 

 At Li(5ge they slept side by side, often interlocked. Pedro was 

 fond of following Pierre in his wanderings and escapades. One 

 day Pierre was lost. He had got out of my desk, had gone down 

 several steps of the stairway, and had slipped in under the carpet, 

 where he was casually found about three weeks afterward. Dur- 

 ing the whole time of his disappearance Pedro refused all food, 

 and had no relish for insects and earthworms, till Pierre was re- 

 stored to him. Seeing him so melancholy, I made an appeal to all 

 my friends in the south of France to get me a new companion for 

 him. M. H. Dineur, an engineer of Prades, sent me a lizard, Oc- 

 tober 1, 1891, three months after Pierre had been found. From 

 that day on a great change was noticed. I had not learned the sex 

 of my animals, but I observed now that they were both males, 

 while the new one was a female. Pedro conceived a great an- 

 tipathy for Pierre, which became more evident every day. Be- 

 tween the pursuits and bitings he suffered from Pedro, Pierre led 

 a martyr's life till I was obliged to make a separate cage for him, 

 and when Pierre was let out for an airing Pedro had to be shut up. 



