SOILS FERTILIZERS. 1029 



application on the offirienoy of tlic lime iiitroi^'cn : iiiid (4) to doterniino the 

 effect of top-dressing with lime nitroj^en. 



The relative efliciency of the iiitrofionons materials on the l)asis of the 

 increased y.eld prodnced, takinj? nitrate of soda as KX), was 91 in case of 

 suli)hate of annnonia and SO in case of lime nitrojjen for all of the crops except 

 buckwheat, with which the efficiency of the sulphate of ammonia was KM) and 

 of the lime nitrogen 77. On the basis of the utilization of the nitrogen, the 

 relative efliciency of the ?> materials was nitrate of soda 1~>, sulphate of ammonia 

 r>,S.l, and lime nitrogen 40.(5. 



The results indicate that there is a considerable loss of nitrogen from lime 

 nitrogen when the material is applied in the winter. Tlie liest results were 

 obtained by incorporating the lime nitrogen with the soil to a (le])th of at least 

 25 cm. Decidedly injurious effects were observed when the material was used 

 as a top-dressing or mixed with the soil to a shallow depth. 



Culture experiments with synthetic nitrate of lime, T. Schloesing, .Jr. 

 {Hill. Sac. Xat. Ai/r. France. 6(1 {I'JOd), Xo. 'J, pp. l.il-l-il : ahs. in Rev. Gen. 

 Afjron.. n. set:, 2 (1907), Xf). 1, pp. 9-11). — Experiments in different parts of 

 France with the product manufactured by the electrical process at Notodden. 

 Norway, are reported. The basic nitrate of lime was compared with nitrite 

 and nitrate of lime and nitrate of soda on wheat, oats, potatoes, hay, and grapes 

 on a variety of soils. In general the different fertilizers were about equally 

 effective. 



Experim.ents with nitrogenous fertilizers at the Halle experiment sta- 

 tion during 1905 and 1906, Schneidewind {Landw. Wchnsehr. tiaelisen, 9 

 {1901), Xo. 9, pp. S7-S9; Mitt. Dent. Landw. Oesell, 22 (1907), No. 5, pp. 

 36-39). — A large number of comparative plat tests of nitrate of soda. -sulphate of 

 ammonia, and lime nitrogen on barle.v. rye, wheat, potatoes, and sugar beets on 

 4 typical soils are reported. The relative efficiency of the nitrogenous fertilizers 

 on 8 of these crops, taking nitrate of soda as 100, was as follows : Barley — 

 suli)hate of ammonia 92, lime nitrogen 77 ; potatoes — sulphate of ammonia 99, 

 lime nitrogen 95; sugar beets — sulphate of ammonia 9.3, lime nitrogen 72; or, 

 averages for all 3 crops of 95 for sulphate of ammonia and 81 for lime nitrogen. 



The influence of applications of lime and magnesia on phosphate fer- 

 tilizing, F. Westhausser and W. Ziei.storff (Landir. Vers. >S7«f., 6.5 (1907). 

 Xo. 5-6, pp. Jf41-4.'f7; abs. in Jour. Chew. Soc. [London], 92 (1907). Xo. SSJ/.. U. 

 p. 296). — A series of experiments on nuistard grown in zinc iiots containing 0.5 

 kg. of ordinary field soil poor in jilant food, especially lime and magnesia, to 

 which i)hosphoric acid in water-soluble form was ai)i»lied at rates of 50 and 100 

 kg. i)er hectare, and Thomas slag at the rate of 100 kg. per hectare, is reported. 

 .\11 of the pots received a basal fertilizer of sodium nitrate and potash salts, 

 and in different cases calcium cnrbdnatc. magnesium carbonate (separately 

 or in mixture), gypsinn. caiistic liiiic. ;ind caustic magnesia were also applied 

 in varying amounts with tlie other fertilizers. ,\11 of the lime and magnesia 

 compounds except g.vi»sum reduced tlic yield wIkmi us(m1 in connection with 

 .solulile phosphate, even when tlic latter was used at the rate of 100 kg. per 

 hectare. The iniurious effect was more marked in the case of magnesia com- 

 jiounds than in case of lime comiwunds. In the case of Thomas slag the addi- 

 tion of moderate amounts of lime or magnesia coini>ounds increased the yield in 

 every case. Large apiilications of lime and especially magnesia reduced the 

 efficiency of the slag. 



The value of crude ammonia, M. de Molinart and (). LiciOT (Hiil. Ai/r. 

 [Brussels], 23 (1907), Xo. 2, pp. 172-17Jf). — In continuation of previous work 

 (E. S. R.. IS. J). (i21 ) the iiuthors report examinations of samples of crude 

 ammonia from different sources. In these the ammoniacal nitrogen varied from 



