March, 1920] FORESTRY 73 



and grading ; marketing; winter storage; judging; structure of the potato plant and tuber; 

 place of potato in crop-rotation; soil and fertilizer requirements; planting, including seed 

 treatment; cultivation; potato pests; uses of the potato. A bibliography of publications 

 relating to potatoes issued by the United States Department of Agriculture is appended. — 

 J . R. Schramm. 



493. Gager, C. Stuart. Seventh annual report of the Brooklyn Botanic Garden, 1917. 

 Brooklyn Bot. Gard. Rec. 7: 33-82. Apr., 1918. 



494. Gager, C. Stuart. A brief history of the botanic garden idea in Brooklyn. Brook- 

 lyn Bot. Gard. Rec. 7:99-112. Oct., 1918.— Gives the history of the "Hunt Brooklyn Botanic 

 Garden" (1855-1856) and of the botanic garden which it was proposed to establish in Prospect 

 Park (Brooklyn) in 1861; also gives brief history of the land included in the present Brooklyn 

 Botanic Garden and the steps leading to its establishment, referring to a fuller account of 

 the present garden (Brooklyn Bot. Gard. Rec. 2: 109-114. Oct., 1913).— C. S. Gager. 



495. Gager, C. Stuart. Eighth annual report of the Brooklyn Botanic Garden, 1918. 

 Brooklyn Bot. Gard. Rec. 8:25-93. Apr., 1919. — Includes reports of the director, the curator 

 of plants, the curator of public instruction, and the librarian; also financial statements. — 

 C. S. Gager. 



496. G[ager]. C. S. Science in peace and war. Brooklyn Bot. Gard. Rec. 7: 89-92. 

 July, 1918. 



497. Guss, Roland W. Gardening and nature study in the schools of Cincinnati. Nat. 

 Study Rev. 15: 85-87. 1919. — Children's garden products valued at three times cost of 

 gardening budget. — A. Gundersen. 



498. Guss, Roland W. Transportation of city children to the suburbs for gardening. 

 Nat. Study Rev. 15:87-88. 1919. — Cincinnati Board of Education pays carfare to children's 

 gardens under certain regulations. — A. Gundersen. 



499. Hopping, Aleita. Mineral nutrition in plants— some suggestions on teaching the 

 subject to high-school students of biology. School Sci. Math. 19: 302-304. 1919.— Advo- 

 cates use of three-salt solution, such as one containing calcium nitrate, magnesium sulphate 

 and mcnc-potassium phosphate. — A. Gundersen. 



£00. Lee, Y. K. [Chinese.] [Education in forestry.] Khu-Shou [Science, a publica- 

 tion cf the Science Scciety of China.] 4:159-163. 1918. 



501. Shaw, Ellen Eddy. Fifth annual children's garden exhibit. Brooklyn Bot. Gard. 

 Rec. 7: 112-113. Oct., 1918. 



502. Ullrich, Fred T. Some reasons for the study of trees in nature-study in the ele- 

 mentary schools. Nat. Study Rev. 15: 19-26. 1919. — Economic, aesthetic and religious 

 reasons. — A. Gundersen. 



FOREST BOTANY AND FORESTRY 



Raphael Zon, Editor 



503. Algau, H. Calcul du prejudice resultant de l'abatage premature des arbres for- 

 estiers. [Calculation of the damage resulting from the premature cutting of forest trees.] 

 Bull. Trimest. Soc. Forest. Franche-Comtd et Belfort 13: 7-15. 1919. — The damage to a 

 forest resulting from its premature exploitation is measured by the difference between its 

 expectation value and its present sale value for immediate utilization. The smaller the trees, 

 the more rapid their growth; the greater the increase in value per unit of volume as the trees 



