434 EXPERIMENT STATION RECORD. 



experiments were conducted on fertile sandy soil for 2 years. Each year stems, 

 leaves and fruits, and roots were weighed and analyzed. Tables are given showing 

 the weight of dry matter for yellow, white, and blue lupines and for vetches and 

 peas. The results show that the blue lupine gave a greater yield of dry matter and 

 nitrogen than either the white or the yellow. The lujnnes produced a larger amount 

 of nitrogen and dry matter in the roots and a smaller amount in the stems and 

 lea\'c's than the peas and vetches. — ii. m. pieters. 



Increasing the yield of mangels, A. Arnstadt {Hesmsche Lmidw. Ztschr., 72 

 {1902), No. 2, pp. 12, IS). — The results of fertilizer experiments are reported, and 

 the culture of the crop with special reference to increasing the yield is discussed. A 

 numlx^r of the best varieties of mangels are briefly described. 



Marram grass {Queemland Agr. Jour., 10 {1902), No. 3, pp. 205, 206).— X brief 

 note on marram grass as a sand binder. 



Marram grass, A. Molineux {Jour. Agr. and Ind., Soufh Amtralia, 5 {1902), 

 No. 7, pp. 604-607, figa. 2). — This article discusses results obtained with marram grass 

 as a sand binder. 



Experiments with, oats in 1902, L. Grandeau {.Tour. Agr. Prat., n. ser., 4 

 {1902), No. 39, pp. 403-407, figs. 2). — The results for 1902 of culture and fertiUzer 

 experiments with oats in progress on the experiment fields of the Pare des Princes 

 since 1891 are reported. Phosphoric acid was applied in 4 diffei'ent forms and all 

 produced a large increase in yield, Thomas slag being the most effective. The differ- 

 ent varieties grown in this test were Kirsche, Mesdag, and Beseler, yielding 20.86, 

 20.40, and 16.82 quintals of grain and 47.68, 50.54, and 53.65 quintals of straw per hec- 

 tare, respectively. The differences in yield due to the fertilizer applications were 

 greater than the differences in yield between the varieties. 



Experiments with different phosphates for oats, H. G. Soderbaum {Medd. K. 

 Landth. Akad. Exptlfdlt, No. 67, pp. 15, jil. 1). — Calcium phosphate, Thomas slag, 

 and superphosphate were compared in pot experiments. The results were largely 

 in favor of Thomas slag and snperj)hosphate and a1)0ut equal for these 2 substances. 



The influence of different temperatures on the growth of roots, A. Tolsky 

 {Zhur. OpuUn. Agron. \_,Tour. Expt. Landiv.'], 2 {1901), No. 6, pp. 733-744). — For the 

 purpose of this study oats were grown in soil kept artificially at temperatures of 25 and 

 8° C, respectively, and compared with plants grown in soil at the natural tempera- 

 ture. In part of the experiment the artificial temperatures were kept up until the 

 first leaves began to unfold, and in the other part until the plants began to tiller. 

 The high temperature caused a quicker germination and growth than the lower tem- 

 peratures, but produced a small root system. The soil kept at a high temperature 

 produced long and thin roots with few branches, while with the lower temperatures 

 short and thick roots with many branches near the surface of the soil were obtained. 

 From these results the author concludes that for sowing oats a cool soil is preferable 

 to a warm one. 



Methods of plant breeding, A. Kirsche {Drvt. Landw. Pressc, 29 {1902), No. 3, 

 pji. IS, 19, fig.^. S). — An account is given of results in plant selection with oats. 



Relation of the chemical composition and anatomical character to the value 

 of potato tubers, F. Waterstradt and M. Willner {Bl. Gcrstca-, Ilopfeu-u. Kartof- 

 felbau, 1901, No. 9, p. 293; ahs. in Centhl. Agr. Chem., 31 {1902), No. 5, pp. 329-331).— 

 The content of starch, crude fiber, and generally of proteids is considerably higher 

 in the outer layer of fresh potatoes than in the marc, but the content of nonproteid 

 nitrogen is smaller, and the total nitrogen is also usually less. The amounts of pro- 

 teid nitrogen and starch in the dry matter of both these parts of the tuber do not 

 differ much, but as a rule the marc contains rather more proteids. 



The tubers of heavy yielding varieties contain relatively more marc tissues than 

 the tubers of less productive sorts. No relation seems to exist between the feeding 



