178 AGRONOMY [BoT. Absts., Vol. IX, 



the beginning of full bloom and seed in the "milk" stage. Maize should be harvested shortly 

 before the grains are mature, because of the increase in nitrogeu-free extracts and fats at that 

 stage. — John W. Roberta. 



1137. PAGiriRiG.\N, D. B. Tobacco growing in the Philippines. Bur. Agric. Philippine 

 Islands Bull. 34. 26 p., 9 pi. 1919. — A popular treatise on the subject with special reference 

 to Philippine conditions. — E. D. Merrill. 



113S. Parish, E. Wheat and its cultivation. Jour. Dept. Agric. Union of South Africa 

 2: 322-332. 1921. — Extracts are presented from Bull. 22, Dept. Agric. Victoria, Australia, 

 with notes concerning the applicability of wheat growing in South Africa, with special refer- 

 ence to the southwestern wheat areas of the Cape. — E. M. Doidge. 



1139. Pate, W. F., and R. Y. Winters. Spacing cotton on North Carolina soils. North 

 Carolina Agric. Ext. Serv. Circ. 112. 7 p. 1921. — Tests extending over a series of years 

 show that best yields of cotton in several localities of North Carolina were secured from 3§- 

 foot rows with 16 inches — in 1 locality 12 — between hills. — F. A. Wolf. 



1140. Pethybridge, George H. Is it possible to distinguish the seeds of wild white 

 clover from those of ordinary white clover by chemical means during a germination test. Econ. 

 Proc. Roy. Dublin Soc. 2: 24S-25S. 1919. — As the seed obtained from wild white clover 

 produces much longer-lived stands than that obtained from cultivated white clover and 

 commands a higher price, an effort was made to determine whether adulteration of the former 

 with the latter could be detected. Seedlings from wild stock from different sources were 

 found generally to give off HCN in sufficient quantity for detection by the picric acid test; 

 those from ordinary stock obtained from England generally gave off much less or none at all. 

 However, some of the ordinary clover seed imported from Canada and America gave off HCN 

 in germinating, making the HCN test of value chiefly where negative results were obtained, 

 indicating adulteration with acyanophoric ordinary seed; and of little value where the wild 

 seed is adulterated with cyanophoric American or Canadian ordinary seed. — Charles Drechsler. 



1141. Rasmussen, H. J. Fodringssporgsmaalet. [Questions on feeding.] Tidsskr. 

 Landokonomi 1921'': 142-162. 1921. — A lecture in which Danish farmers are urged (1) to 

 raise more feed at home, especially timothy and alfalfa, so as to eliminate as far as possible the 

 importation of animal feed ; (2) to build silos and feed ensilage in the same manner as American 

 farmers. The results of feeding experiments by Armsby of the Pennsylvania State College 

 are quoted. — Albert A. Hansen. 



1142.'Rosenfeld, Arthur H. Saving money with frozen cane. Internat. Sugar Jour. 

 23: 31G-319. 1921. — After a killing freeze in northern Argentina, the frozen cane was used as 

 a mulch between alternate rows of Ist-year stubble, — following the principle of using trash in 

 the Cuban cane fields; a saving of labor and money resulted. In the unirrigated sections, the 

 mulched fields produced slightly better yields than the regularly cultivated ones. — C. Rumbold. 



1143. RtJMKER, UND R. Leidner. Sommerweizenanbauversuche. [Culture experiments 

 with summer wheat.] Illus. Landw. Zeitg. 41: 58-59. 1921. — A report is presented of plat 

 experiments for the testing of different varieties in Bornstedt (1919) and Emerslebn (1920). 

 The results are given in tabular form and include time of heading, time of blooming, resistance 

 to rust and smut, length and thickness of heads, color of grains, weight of 100 grains, and 

 yield. — John W. Roberts. 



1144. Shepherd, A. N. Farmers' experiment plots. Potato trials, 1920. Murrumbidgee 

 irrigation areas. Agric. Gaz. New South Wales 32: 309-312. 1921. — Four settlers cooperated 

 in conducting trials, 7 varieties being grown. Up-to-Date produced the largest yields. 

 Mineral fertilizers increased the net returns, in one case by $140 per acre. — L. R. Waldron. 



