IV 



CONTENTS. 



205 



Spencer Trotter, M.D. The Faunal Divisions of Eastern North America 



in Relation to Vegetation 



George Howard Parker, Sc.D. The Relation of Smell, Taste, and the 



Common Chemical Sense in Vertebrates 219 



Sir William Turner Thiselton-Dyer, LL.D., F.R.S. On the Supposed 



Tertiary Antarctic Continent 235 



William Healey Dall, A.M., Sc.D. Mollusk Fauna of Northwest 



America 241 



John Muirhead Macfarlane, D.Sc. The Relation of Plant Protoplasm 



to its Environment 249 



Henry Fairfield Osborn, LL.D., Sc.D. Tetraplasy, the Law of the Four 



Inseparable Factors of Evolution 273 



Witmer Stone, A.M. The Phylogenetic Value of Color Characters in 



Birds. Plate XXVII 311 



Thomas Hunt Morgan, Ph.D. Further Experiments with Mutations in 



Eye-color of Drosophila: The Loss of the Orange Factor. Plate 

 XXVIII 



321 



371 



James Edmund Ives, Ph.D. On the Radiation of Energy 347 



Henry Herbert Donaldson, Ph.D., Sc.D. The History and Zoological 



Position of the Albino Rat 363 



Addison E. Verrill, A.M. The Gorgonians of the Brazilian Coast. 



Plates XXIX- 



George Augustus Koenig, Ph.D. New Observations in Chemistry and 



Mineralogy. Plate XXXVI 405 



Henry Augustus Pilsbry, Sc.D. A Study of the Variation and Zoogeog- 

 raphy of Liguus in Florida. Plates XXXVII-XL 427 



H. von Ihering, M.D., Ph.D. Analyse der Sud-Amerikanischen Heliceen. 



Plates XLI, XLII 473 



Edwin G. Conklin, Ph.D. Experimental Studies in Nuclear and Cell 



Division in the Eggs of Crepidula. Plates XLIII-LIX 501 



. Index to Genera, Species, etc 593 



General Index 603 



