10 AGRONOMY [Bot. Absts*., Vol. IV, 



seed from Russia almost ceased. During 1917-18, Danish cattle suffered seriously from lack 

 of food, due in large part to the exceedingly dry summers during both years, and the ceasing 

 of importation of oil cakes and oil meal from the United States. — Albert A. Hansen. 



78. Holland, J. H. Food and fodder plants. Kew Bull. Misc. Inf. [London] 1919: 1-84. 

 1919. This is an account of the history, distribution, popular botanical features and eco- 

 nomic products of the chief food and fodder plants of the world. Both scientific and common 

 names of the plants are given. — E. M. Wilcox. 



79. Holmes, Smith. E. Flax cultivation. South African Jour. Indust. 2:1022-1033. 

 2 pi. 1919. 



80. Holmes Smith, E. Fibre plant investigations. South African Jour. Indust. 2:969- 

 983. 1919. 



81. Hunter, Byron. Dry farming for better wheat yields. The Columbia and Snake 

 River basins. U. S. Dept. Agric. Farmers Bull. 1047. H fig. 1919. 



82. Iverson, Karstex. Lokale Forsog med Kunstgodning til Korn og Rodfrugt. Vdforte 

 paa Fyn i darene 1901-1915. [Local experiments with fertilizers for cereals and root crops. 

 Performed in Fyn in the years 1901-1915.] Tidsskr. Landburg. Planteavl 26: 193-297. 1919. 

 —See Bot. Absts. 4, Entry 1664. 



83. Iverson, Karsten. Dyrkningsforsog med forskellige sorter af toradet byg, 1913- 

 1916. [Experiments with different varieties of two-rowed barley, 1913-1916.] Tidsskr. Land- 

 brug. Planteavl 26: 1-37. 1919. — Previous experiments have demonstrated that the Archer 

 variety of barley yielded the highest average quantity of grain. Archer barley produces 

 abundant foliage, ripens late and there is practically no difference in yield and botanical dis- 

 tinctions between the various strains experimented with; namely Svalof 's Princess and the 

 three Prentice varieties, Lyngby, Tystofte and Abed. All are similar to Irish Archer. The 

 results of a series of experiments are described in which the Tystofte strain is compared with 

 Abed Bender, Svalof Golden and Svalof Hannchen, which are early ripening with short, stiff 

 straw. Experimental comparisons were also made with Tystofte No. 40, Abed, Rex and 

 Abed No. 570, all new strains In general, the results indicate that the difference between 

 the latest and earliest strains depends mainly on the factor of upright growth or crop lodging. 

 Abed Bender yielded best results in lodged crops, while Tystofte Prentice yielded best in 

 upright crops. Seven sets of experiments were used, located in seven different situations 

 under varying soil conditions and each consisting of eight plots. Data were collected for 

 four years, 1913-1916. — Albert A. Hansen. 



84. Jennings, A. C. The economic aspect of irrigation. Rhodesian Agric. Jour. 16: 429- 

 432. 1919. 



85. Johnson, T., and C. Boyle. Observations on the industrial and nutritive value of 

 the potato in Ireland. Jour. Dept. Agric. Ireland 19:416-429. Fig. 1-3. 1919.— Discusses 

 variation in starch content as related to differences in variety, soil, fertilizer, rainfall and 

 climate. — Donald Folsom. 



86. Jones, C. Bryner. The breaking up of permanent grass in 1918. Jour. Roy. Agric. 

 Soc. England 79:24-44. 1918.— See Bot. Absts. 4, Entry 1665. 



87. Killer, J. Uber die Umziichtung reiner Linien von Winterweizen in Sommer- 

 weizen. [Concerning the changing over of pure lines of winter wheat into spring wheat.] Jour. 

 Landw. 67: 59-62. 1919. — Experiments at the Experiment Station at Colmar in Alsace with a 

 large number of pure lines of winter wheats showed that those belonging to a certain type 

 may serve equally well as spring or winter wheats; those of another type, if sown early in 

 the spring, will form more or fewer heads; while those of a third type do not even form culms- 



