196 AGRONOMY [Bot. Absts. 



1370. Holmes-Smith, E. Fibre plant investigations. South African Jour. Indust. 2: 

 157-172. 1919.— Generally speaking the whole of the coastal area from the Transkei to Mossel 

 Bay offers great possibilities for the development of fiber growing and fiber industries. It 

 is recommended that sisal hemp, Mauritius hemp and New Zealand hemp should be extended 

 and encouraged as far as possible. .The climatic and soil conditions of this part of the Cape 

 Province appear more suited to the growing of "hard fiber" than of "soft fiber" plants. The 

 writer suggests that experimental plantations upon a moderate scale be laid down in the vi- 

 cinity of Kei Bridge (Transkei), East London, Kingwilliamstown, Port Elizabeth, Uitenhage 

 or Humansdorp, Knysna or George. — E. P. Phillips. 



1371. Jardine, James T., and Mark Anderson. Range management on the national 

 forests. U. S. Dept. Agric. Bull. 790, 98 p. 82 pi. 1919.— See Bot. Absts. 3, Entry 1444. 



1372. Keller, G. N. Tobacco growing in Ireland. The experiments in 1918. Jour. Dept. 

 Agric. Ireland 19: 298-302. 1919.— Discusses various phases of culture, pests and diseases, 

 and use. — Donald Folsom. 



1373. Kiesselbach, T. A. Forage crops. Nebraska Agric. Exp. Sta. Bull. 169. 86 p. 

 8 fig. 1918.— A brief description of the principal forage crops suitable for various Nebraska 

 conditions is given, and cultural practices are outlined. The results of comparative forage- 

 crop tests at the Experiment Station during three years, 1914-17, are tabulated. — During three 

 years alfalfa cut for hay earlier than the normal stage of maturity, resulting in five seasonal 

 cuttings instead of three or four, reduced the three years average yield from 5.57 tons to 3.7 

 tons per acre. Such frequent cutting decidedly reduced the vigor and number of plants. 

 The yield of alfalfa cut less than the normal number of times was reduced to 3.43 tons for two 

 cuttings in contrast to 5.57 tons normal. After three years' cumulative effect of cutting- 

 frequency, all the alfalfa was cut a fourth season at the normal stage of maturity with the 

 following results: (1) previous normal cutting yielded 3.40 tons; (2) previous too-frequent 

 cutting 2.16 tons; (3) previous insufficient cutting 3.11 tons. — T. A. Kiesselbach. 



1374. Lee, S. C. Electrical treatment of seed. Agric. Gaz. Canada 6: 173-175. 1919. 



1375. Long, Frances Louise. The quantitative determination of photosynthetic activity 

 in plants. Physiol. Res. 2: 277-300. June, 1919. [Serial no. 16.]— Method for comparing 

 net photosynthetic activity of different varieties under same conditions, or of same variety 

 under different conditions. [See Bot. Absts. 3, Entries 2685, 2833; 4, Entry 241.]— B. E. 

 Livingston. 



1376. Lyon, T. L. Experiments in fertilizing a crop rotation. New York Agric. Exp. 

 Sta. [Cornell] Bull. 399: 19-30. Feb., 1919. 



1377. MacDermott, F. D. Agricultural and pastoral South Africa. South African Jour. 

 Indust. 2 : 419-^35. 1919. 



1378. MacDermott, F. D. Agricultural and pastoral South Africa. South African Jour. 

 Indust. 2: 505-519. 1919. 



1379. Main, F. [Rev. of: Fauchere, A. Guide pratique d'agriculture tropicale. 159 p. 

 Paris: Augustinn Challamel. 1918.] Jour. Agric. Tropic. 19: (Bull. Bibliog.) : 127. 1919. — 

 A treatise on the development of agriculture in French colonial possessions. — J. D. Luckett. 



1380. Malte, M. O. Sugar content and its relation to winter hardiness. [Rev. of: Aker- 

 man, A., Hj. Johansson, and B. Platon. Fortsatta Undersokningar Rorande Sockerhalt 

 och Torrsubstanshalt hos Nagra Hostvetesorter, Sveriges Utsadesforenings Tidskrift (Jour. 

 Swedish Seed Assoc.) 28: 216-224. 1918.] Agric. Gaz. Canada 6: 329-331. 1919— Four va- 

 rieties of winter wheat with varying degrees of winter hardiness were grown together under 

 uniform conditions and analyzed for their sugar contents at various times during the growing 

 period. A direct correlation was found between winter hardiness and high sugar content or 

 the amount of reducing substances in the plant cells. — 0. W. Dynes. 



