TABLE OF CONTENTS 



AND OF CONTRIBUTORS. 



PAGE. 



Portrait of Professor Burt Green Wilder. Engraved by 

 John P. Davis, Secretary of the Society of American Wood- 

 Engravers Frontispiece. 



List of the more important scientific publications of Professor 



Wilder I 



TabIjE showing the number of students taught by Professor Wilder 9 



David Starr Jordan, LL. D. , President of the Leland Stanford 

 funior University, Temperature and Vertebrae — A Study in 

 Evolution, Being a Discussion of the Relations of the Numbers 

 of VerteljrEe among Fishes to the Temperature of the Water 

 and to the Character of the Struggle for Existence 13 



Anna BotsFord Comstock, B.S., Member of the Society of 

 American Wood-Engravers, Natural History Artist. I. En- 

 graving of a Cat (following page 36). II. Engravings of Moths 

 (Plate I, illustrating the Essay on Evolution and Taxonomy). 



John Henry QotAStoa^, 'Q.S., Professor of Entomology and Gen- 

 eral Invertebrate Zoology in Cornell University, and Professor 

 of Entomology in The Leland Stanford funior University. 

 Evolution and Taxonomy. An Essay on the Application of 

 the Theory of Natural Selection in the Classification of Ani- 

 mals and Plants, Illustrated by a Study of the Evolution of the 

 Wings of Insects, and by a Contribution to the Classification of 

 the Lepidoptera, (with three plates, and thirty-three figures in 

 the text) 37 



Eugene Roi,r<iN Corson, B.S., M.D., Physician and Stirgeon, 

 Savannah, Ga. The Vital Equation of the Colored Race and its 

 Future in the United States 115 



I/ELAND O. Howard, M.vS., First Assistant Entomologist, U. S. 

 Department of Agriculture, Washington, D. C. The Corre- 

 lation of Structure and Host-Relation among the Encyrtinse . 177 



Theobald Smith, Ph.B., M.D., Chief of the Division of Animal 

 Pathology, Bureau of Aniinal Industry, U. S. Department 

 of Agriculture, Professor of Bacteriology and Hygiene in the 

 Medical Department of the Columbian University , Washing- 

 ton, D. C. The Fermentation Tube with Special Reference to 

 Anaerobiosis and Gas Production among Bacteria, (with one 

 plate) 187 



William Christopher Krauss, B.S., M.D., Physician, Professor 

 of Pathology, Medical Department of Niagara University, Buf- 

 falo, N. Y. Muscular Atrophy Considered as a Symptom, 

 (with one plate and three figures in the text) 235 



