18 EXPERIMENT STATION RECORD. 



sandy soils, as well as on the better kinds of decomposed moor soils, gave consider- 

 ably poorer results than nitrate of soda, and was not quite equal to sulphate of 

 ammonia. On poorly decomposed white-moor soils its effect was insignificant, and 

 its use on such soils can not therefore be recommended. — f. w. woll. 



Manurial experiments with calcium cyanamid and garden plants, R. Otto 

 (Gartenflora, 53 {1904), No. 20, pp. 534-538; abs. in .Jour. Chan. Soc. [London], 88 

 I 1905), Xo. 509, II, p. 196). — "Calcium cyanamid was found to be equal to nitrates 

 and ammonium salts in the case of spinach, although at first growth was somewhat 

 retarded. Equally satisfactory results were obtained with lettuce when planted 12 

 days after manuring. The results of pot experiments showed that calcium cyanamid 

 gave better results with white cabbage and maize than sodium nitrate. The manure 

 seems to be suitable for garden plants, provided that it is applied a week or two 

 before planting, or else dug in to a depth of 13-26 cm." 



The action of nitrate of soda and sulphate of ammonia in connection with 

 lime on sandy soils, Bachmann {Fuhling's Landw. Ztg., 54 {1905), Xo. 3, pp. 219- 

 .'.',; \. — Comparative tests of these 2 materials with and without the addition of lime 

 on barley, oats, and beets are reported. The results show that the action of the 

 ammonium sulphate was increased by the addition of calcium carbonate; that of 

 nitrate of soda was not materially affected. 



The use of leucin and tyrosin as sources of nitrogen for plants, L. Lutz 

 {Compt. Rend. Ac<i<!. Sri. [Paris'], 140 {1905), Xo. 6, pp. 380-382).— Sand cultures 

 with pumpkins and cultures in Raulin's solution with fungi (Aspergillus and Peni- 

 cillium) indicate that leucin and tyrosin are readily assimilated by both phanerogams 

 and fungi. 



Inoculation of soil with nitrogen-fixing- bacteria, A. F. Woods {XI. S. Dept. 

 Agr., Bur. Plant Indus. Bui. 72, pt. 4, pp. 10). — In this publication the author briefly 

 describes the commercial production of cultures of nitrogen-fixing bacteria, states 

 when inoculation is necessary and when it is not to be recommended, and describes 

 various conditions under which failures may be expected. Directions for the 

 handling of the culture material are given, and certain dangers that may attend 

 inoculation by soil transfer are pointed out. 



On the results of four years' culture and liming experiments on moor soils, 

 B. Hardt {Deut. Landw. Presse, 32 {1905), No. 29, pp. 253, 254). 



On the injurious effect of an excess of lime applied to the soil, S. Suzuki 

 {Bui. Col. Agr., Tokyo Imp. Univ., 3 {1905), Xo. 4, pp. 347-351). — A series of pot 

 experiments with rice to further elucidate the cause of the depression of availability 

 of phosphoric acid in presence of large amounts of lime is reported. 



It was found that an excess of calcium carbonate depressed the yield very decidedly 

 notwithstanding the fact that phosphoric acid was applied in the easily available 

 form «>f secondary sodium phosphate. On the other hand, the application of calcium 

 sulphate under the same conditions resulted in an increased yield, indicating that 

 the application of the carbonate depressed the assimilability of the phosphoric acid. 

 The application of powdered magnesite at a rate furnishing three times as much 

 magnesia as lime greatly depressed the yield. The application of moderate amounts 

 of lime in connection with bone dust did not noticeably diminish the yield. This 

 occurred, however, in a soil containing 11 per cent of humus. 



The analyses of stone lime, prepared lime, oyster-shell lime, wood ashes, 

 and marl, L. A. Vooruees {New Jersey Stas. Bid. 183, pp. 27). — Chemical and phys- 

 ical examinations of a large number of samples of these materials are reported and 

 discussed. Practical directions regarding the use of lime are quoted from Pennsyl- 

 vania Department of Agriculture Bulletin 61 (E. S. R., 12, p. 627). 



Analyses and other studies of "West Prussian marl, lime, and other 

 commercial lime fertilizers, M. Schmoeger {Landw. Jahrb., 34 {1905), Xo.2,j>j>. 

 177-232). — A large amount of analytical data is reported and discussed. 



