A hardly rigorous popular compendium of primate profiles, loosely following upward evolutionary movement, with emphasis on behavior and physiological differentiation and development. First chapters deal with one of the extant ""pro-primates"" -- the tree shrew, with its vertically divided cerebral cortex, the lemur -- which also sports a primate clavicle, and the tarsier -- with its round nose and back-brain enlargement -- a possible ""link"" which now exists in only one species. Bourne then trots out a parade of monkeys and apes -- macaques, baboons, chimps, gorillas, gibbons, etc., etc. Each profile includes, as well as anatomical and behavioral information, some personal observations of specimens by the author and others. In discussions of the higher primates Bourne meanders through recent research, particularly experiments in field and laboratories which stress socialization and conceptualization. He concludes with a smattering of prognoses, by-guess-and-by-golly's about the influence of primate studies on man's scientific progress. A little bit about lots of creatures -- but with more than 250 illustrations, this barrel of monkeys could be taken along to the zoo or natural history museum.