Smithsonian Report. 1 94 1. — Walker 



Plate 9 



1. Malayan porcupines gnawing on a freshly cut tulip tree limb about 20 inches long and 4 inches in diam- 

 eter. Within 10 hours, the five porcupines in this cage had reduced the limb to a mass of chips and a 

 spindle-shaped piece about a foot long and not more than 2 inches in diameter at its largest point. 



Binturong on artificial rock work in Brookfield Zoo, Chicago, 111., separated from the public by a moat 

 and a low, irregular imitation rock wall. 



