94 EXPERIMENT STATION RECORD. 



includes !) siiuplo exercises on seed testinj;. depth of plantinj;, some essentials 

 for serniiuation, liow iilants grow, disposition of surplus water in plants, effect 

 of exclusion of air on iilant growth, effect of too much water in soil, and where 

 roots increase in length, as well as a study of the cotton plant in the school 

 garden plat and of its products after it is picked. 



Notes on drainag'e, E. It. Jones (Madison, Wis., J 90S, i>i). IGli, figs. ,:?.J). — This 

 is a text-book dealing with class-room, field, and laboratory exercises for stu- 

 dents of land drainage. Prepara^ry to the lessons dealing strictly witli drain- 

 age are a number of chapters on surveying, containing instructions concerning 

 linear and angular measurements, subdivision of land, methods of mapi)ing, the 

 use of different instruments, and problems in surveying. 



The lessons relating to di'ainage deal with moisture and its relations to the 

 soil and methods of artificial drainage and principles govei-ning it. Numerous 

 exercises for practice are given. 



MISCELLANEOUS. 



Annual Beport of Porto Rico Station, 1907 (Porto Rico Sta' Rpt. 1907, 

 PI). 55). — This report contains, in addition to a summary by the director of the 

 investigations conducted at the station, separate reports for the physiologist, 

 horticulturist, entomologist and plant pathologist, and coffee expert, and an 

 article on The Fermentation of Cacao and of Coft'ee. The experimental work 

 reported is abstracted elsewhere in this issue. 



Twenty-fourth Annual Report of Wisconsin Station, 1907 ( Wisconsin ^ta. 

 Rpt. 1901', pp. VII+'i37). — This includes the organization list of the station, a 

 report of the director on the work of the station during the year, numerous 

 articles abstracted elsewhere in this issue, registers of licensed feeding stuffs 

 and fertilizers and their guaranties, lists of exchanges and donations, and a 

 financial statement for the fiscal year ended June 30, 11)07. 



Laws applicable to the United States Department of Agriculture (Wash- 

 ington: U. 8. Dept. Agr., Office Solicitor, 1908, pp. 255). — A compilation of the 

 provisions of law pertaining to this Department in force July 1, 1907. 



The conservation of natural resources, G. Pinchot (U. 8. Dept. Agr., Farm- 

 ers' Bui. 327, pp. 12). — An address delivered before the National Geographic 

 Society. January 31, 1908, in which attention is directed to the necessity of 

 immediate conservation of the natural resources. The concerted action of for- 

 estry associations, waterway associations, irrigation associations, and related 

 bodies is suggested as a means of bringing about a new point of view on the 

 part of the general public to lead to tlie adoption of u defluite policy. 



