306 EXPERIMENT STATION RECOBD. 



and meats through the great central markets was discussed by Prof. 

 L. D. Hall, of the Office of Markets and Rural Organization. Recent 

 progress in the development of methods for the control of parasites 

 of live stock was epitomized by Dr. B. H. Ransom of the Bureau 

 of Animal Industry. 



The formation of an international veterinary police was advo- 

 cated by Dr. Jose Leon Suarez of Argentina, and the feasibility of 

 adopting uniform regulations was discussed by Dr. A. D. Melvin 

 of the Bureau of Animal Industry, Dr. Rafael Munoz Jiminez of 

 Uruguay, and Dr. Francisco Etchegoyen of Cuba. 



The papers relating to plant industry were somewhat less numer- 

 ous but covered a wide range of subjects. Mention may be made of 

 five papers from the Bureau of Plant Industry, namely, a discussion 

 of the water requirements of crops as determined in several localities 

 by Drs. L. J. Briggs and H. L. Shantz; plant introduction oppor- 

 tunities open to the Americas, presented by Mr. David Fairchild; 

 the possibilities of intensive agriculture in tropical America, dis- 

 cussed by Prof. O. F. Cook ; tropical varieties of maize, by Mr. G. N. 

 Collins; and the animal organisms of the soil by Dr. N. A. Cobb. 

 Among the papers from Latin America were a discussion of man- 

 ganese as a plant food, by Prof. Maimo Sarasin of Uruguay, and on 

 the conservation of industrial plants, by Prof. Rafael Pinel Batres 

 of Guatemala. 



A lecture by Prof. C. D. Smith, formerly of the Michigan College 

 and Station, on the resources of Brazil dealt with various lines of 

 conservation. There was also numerous papers dealing with irriga- 

 tion problems, and a special discussion by several speakers of plant 

 quarantine regulations and the possibility of Pan American coopera- 

 tion in the combating of insect pests and plant diseases. 



A notable feature in the forestry discussions was the large atten- 

 tion given to conditions outside this country. Thus Mr. R. Zon, of 

 the Forest Service, presented an estimate of South American timber 

 resources, from which he concluded that although the total forest 

 area is 1,924,000,000 acres, the Continent can not be considered as a 

 future source of supplies for the most commonly used woods. Dr. 

 Cristobal Hicken, of the University of Buenos Aires, discussed the 

 botany of the forest regions of southern Patagonia, as revealed by his 

 recent explorations. Major G. P. Ahern described forestry condi- 

 tions in the Philippine Islands and the organization of the insular 

 forest service, and Barrington Moore discussed the need of scientific 

 forestry for Latin America. 



The adoption of a definite forest policy and the maintenance of a 

 forest service by the nations of Central and South America was rec- 

 ommended by Dr. Elias Leiva Quiros, of Costa Rica, who believed 



