26 NATIONAL TRENDS IN BIOLOGY 



growth, also has been pursued. Many insect pests flourish 

 in their new homes because those particularly predaceous 

 and parasitic insect enemies which ordinarily keep them 

 in check, are not imported with them. But an interesting 

 work has grown up in finding what these insect enemies 

 are and importing them. 



In connection with work of this nature, one can show 

 how some of the larger animals may be and are conserved 

 by an international cooperative union in this study. Kel- 

 logg^ calls attention to the fur seals of the Pacific, which 

 were rapidly approaching extinction on account of unre- 

 stricted killing on the high seas as well as on their breed- 

 ing grounds in the Pribilof Islands, when international 

 agreements made in 1911 among Great Britain, Russia, 

 Japan, and the United States saved them as a species and 

 at the same time allowed a reasonable taking of skins. 



This geographical aspect is also prominent in the report 

 of the last meeting of French scientists.* Due to economic 

 conditions, the Colonies must be developed; President 

 Alfred Lacroix particularly stressed the part that science 

 must play in the development of Tunis, Algeria, Morocco, 

 Senegal -Niger, Guinea, the Congo, Indo-China, and other 

 regions under French control. In fact, this year's meeting 

 of the French association is to be held in Constantin, Al- 

 geria. Even Dr. Voronoff, the gland surgeon, has passed 

 from human gland transplantations to work on farm ani- 

 mals, with a view toward producing heavier sheep bearing 

 more wool. And Australia, a very few years back, spent 



