no NATURE STUDY RHriEJV [8 :;3— Mar.. 1912 



Suggested References. 



1909 — Herrick. The X. American Lobster. Bulletin Bureau 

 of Fisheries, vol. XXIX. 



1904 — Andrews, E. A. Breeding Habits of Crayfish. Amer- 

 ican Naturalist, vol. 38. 



1906 — Egg-laying of Crayfish. Ibid, vol. 40. 



190G — Keeping and Rearing of Crayfish for Class Use. Na- 

 ture Study Review, vol. 2-Dec., 1906. 



1906 — Chidester, F. E. Notes on Daily Life and Habits of 

 Canibains bartonius bartoni. American Naturalist, vol. 42. 



1900 — Dearborn, G. V. N. Notes on the Indizndnal Psy- 

 chology of Crayfish. Amer. Journ. Psychology, 1900. 



1906 — Ortmann. Crawfish of the State of Pennsylvania. 



1911 — ^Comstock, Anna B. Handbook of Nature Study. 



1908— Holtz. Nature Study. 



1903 — ^Jordan, Kellogg and Heath. Animal Studies. 



Eugenics 



H. H. Laughlin. 



Eugenics is the science of race improvement through the 

 application of the laws of heredity. In its present aspect it is a 

 new science and is the natural outgrowth of the renaissance of 

 inheritance studies of the last decade. 



That persons are vastly different in their innate qualities and 

 talents, and that the different strains within the great peoples of 

 history have varied greatly in their characteristic capacities have 

 been matters of universal observation and comment. The desir- 

 ability of propagating from the best and of cutting off the supply 

 of the lowest has always been recognized. Caste, war, prejudice, 

 diffidence, a host of social deterrents, and above all the lack of 

 definite understanding and appreciation of the behavior in hered- 

 ity Qi special mental and physical traits have prevented the con- 

 servation of the best germ-plasms of history. 



Eugenic research holds out the hope of removing the last of 

 these causes of race deterioration. Because' knowledge of the 

 facts must precede propaganda and legislation, scientific research 

 into the manner of the inheritance of traits is the present Eugenic 

 program in America. Such a program calls for much first liand 

 data. It means that records of the family distribution of definite 

 clean-cut traits must be had, — manv. doubtless hundreds, of hu- 



