infant in its mouth, and it often fell to my lot to take care of the unfortunate children and replace them in the nest whilst the mothers had a "stand-up" fight, and this is a literally true expression, for gerbilles sit bolt upright and fight each other with their front feet; but, though they appear to be in desperate conflict, I must say I never saw that any damage was done. As to their gnawing power, it is almost beyond description. I gave them a strong wooden box as a nursery for the young gerbilles, but before long they had eaten out the back and sides, and a mere skeleton of a box remained. There was a piece of zinc, which formed a partition, but they ate a hole right through the zinc in no time, and when a wire cage, with a sliding door, was placed in the plant case, they soon learnt how to lift up the door and get out. We often watched the formation of the family nest, which was constructed of wool and hay nibbled very small, and carried by mouthfuls and woven together, generally had two for ingress and egress. There the entire family would sleep during the day amicably enough, but towards evening the nursery disputes would begin, and old
