THE increase in the number of visitors to the Zoological Park near Edinburgh to just short of half a million, and a surplus on the year's working of £1,708, indicate the material success of this Society (Ann. Report Zoo. Soc. Scot., 1936–37). In other ways it has made notable progress. The new open-air enclosure for tigers, which occupies the site of an old sandstone quarry, is a most striking example of the use of natural rock, and a new restaurant, made necessary by the increase of visitors, has been completed and opened. During the year five king penguin chicks were hatched, of which three were successfully reared, and amongst mammals there were born and reared lion cubs, four beavers, three llamas, a nilghai and Barbary sheep. The chimpanzee born in January 1936 has developed well, and for many years the breeding of tropical freshwater fishes has been a feature of the Carnegie Aquarium. A successful innovation was the holding of a series of meetings of members at which lectures upon, and illustrated accounts of, their investigations of animal habits and behaviour were given by experts.