IN FUTURE NUMBERS 



Chromosomes in Drosophila, two papers by Charles W. 

 Metz and Mildred S. Moses, summarizing what is 

 now known about the carriers of heredity in the fruit 

 fly and its relatives. 



Biology in Human Progress, by O. F. Cook. Is civiliza- 

 tion subject to fixed cycles of growth and decay, or 

 can the destructive forces be analyzed and their ac- 

 tion arrested by the application of biological princi- 

 ples to human affairs? 



Naked Oats, by T. R, Stanton. The story of a variety 

 that has been a boon to dishonest seedsmen for a 

 generation. 



Freshman Matrimonial Ideals, by Robert T. Hance. 

 The obverse, or rather the reverse of the usually 

 gloomy result of inquiring into the college birth-rate, 

 perhaps because prospective families are considered 

 rather than actual ones. 



Age and Area, by Hugo de Vries. Are the most widely 

 spread species the oldest? 



Intersexes in Nemiatodes, by G. Steiner. Few people 

 know what a nematode is, let alone what it looks 

 like. We hope that this article will serve as an in- 

 troduction to one group of this interesting but little 

 known branch of life. 



Inheritance of Spotting in Holstein Cattle, by L. C. 

 Dunn, H. F. Webb, and M. Schneider. How much 

 of the variation in the amount of spotting seen in 

 this popular breed is hereditary? 



