CONTENTS 



No. i, March, 19x8 



PAGE 



The Sensory Capacities and Intelligence of Dogs, with a Report 

 on the Ability of the Noted Dog "Fellow" to Respond to Verbal 



Stimuli C. J. Warden and L. H. Warner 1 



The History of Whales. Their Adaptation to Life in the Water .Remington Kellogg X9 



Recent Developments in the Philosophy of Biology Joseph Needham jj 



Cephalopod Adaptations — The Record and Its Interpretation Edward W. Berry $2. 



The Life Cycle and Mating Habits of the Male Tarantula W.J. Baerg 109 



New Biological Books : 



Human Sapience Charles P. Winsor 117 



Brief Notices 1x7 



No. x, June, 19x8 



Homology, Analogy and Plasis John Tait 151 



The History of Whales. Their Adaptation to Life in the Water 



(Concluded) Remington Kellogg 174 



The Effect of Carbon Dioxide on Bacteria George Valley 109 



The Evolutionary Significance of the Protozoan Parasites of Mon- 

 keys and Man Robert Hegner XX5 



Haldane on Selection Lowell J. Reed X45 



Seasonal Modifications in Testes of Vertebrates R. M. Oslund X54 



Evolution and Mortality Raymond Pearl X71 



New Biological Books: 



Brief Notices 2.81 



No. 3, September, 19x8 



The Gene ' Richard Goldschmidt 307 



Sub-human Culture Beginnings A. L. Kroeber 3x5 



Root Hairs and Growth Clifford H. Parr 343 



Controlled Mating in Honeybees Lloyd R. Watson yj-j 



Experiments on Longevity Raymond Pearl 391 



Criteria for Distinguishing Identical and Fraternal Twins Taku Komai 408 



New Biological Books: 



Morgan on Entwicklungsmechanik S. R. Detwiler and H. B. Adelmann 419 



Brief Notices 4x7 



No. 4, December, 19x8 



The Chloroplast Pigments, their Functions, and the Probable 



Relation of Chlorophyll to the Vitamines Frank M. Schertx. 459 



The Development of Modern Comparative Psychology C. J. Warden 486 



Animal Evolution Austin H. Clark 5x3 



The Metabolism of Insects Mary Honora Sayle 54X 



