Show Captive Monkeys Happy Monkeys s 's no longer mope in the London London London Lon Lon- don zoo since the they have hare had Thad ins installed taIled over their quarters a n roof made of a special glass which lets in the ultra violet rn rays s According to Dr Chalmers Chalmers Chal Chal- mers mets Mitchell director of the zoo the violet ultra-violet rays which are arc excluded b by the ordinary window glass are Just what the simians crave and they have I responded automatically to the lus They chatter and swing and hurl their coconuts around with twice the abandon they showed before |