436 EXPERIMENT STATION RECORD. 



On an important observation concerning ignited Thomas phosphate, M. 

 SCHMOEGER (Landw. Vers. Stat., 4S (1897), No. 6, pp. 413-418). — Thomas phosphate 

 ignited with silica increased in citrate solubility ; by simple heating of the phosphate 

 the citrate solubility was in some cases increased, in others decreased. 



On ground bone, Tancre (Landw. Wocheribl. Schlesw'uj-Holstein, 47 (1807), No. 37, 

 p. 525). 



Nitrate of soda vs. sulphate of ammonia, J. J. Willis (Gard. Citron., ... ser., :.' 

 (1897), No. 552, pp. 46, 47). 



Poisoning of plants by nitrate of soda, P. Schmidt (Landw. Cenlbl. Vosen,25 

 (1897), Nos. 28, p. 173; 29, pp. 178, 179). — Recommendations to German farmers 

 regarding the purchase of nitrate of soda based on the work of Sjollemaand others. 



Nitrogen manuring with special reference to the more important nitrogenous 

 fertilizers of commerce (sulphate of ammonia and nitrate of soda), O. Reitmair 

 (Ueber Sticksloff-Diingung ; mil besonderer Beriicksichtigung dcr wichtigsten Stickstoff- 

 Diinger des Handels (schwefelsanres A.nmoniak und Chilisalpeter). Vienna: Wilhelm 

 Frick, lS97,pp.24). 



Analyses of fertilizers, C. A. Goessmann (Massachn setts Hatch Sta. Bui. 48, pp. 

 24). — Tabulated analyses of 177 samples of fertilizing materials, including ashes, 

 muriate of potash, sulphate of potash, kainit, bone, tankage, mineral phosphate, 

 cotton-seed meal, tobacco refuse, muck and soil, guano, and mixed fertilizer. The 

 variation in composition of ashes is discussed and comments are made on the fertiliz- 

 ing value of some of the other fertilizing materials analyzed. 



Phosphate manuring -with special reference to the more important phos- 

 phatic fertilizers of commerce (superphosphates and Thomas slag), O. Reit- 

 mair (Ueber Phosphorsdure-Dunger mit besonderer Bei'iicksichtigung der wichtigsten 

 Phosphor ■saure-Dunger des Handels (Superphosphat und Thomasschlacke). Vienna: Wit- 

 helm Frick , 1897, pp. 24). 



Box experiments with phosphates, L. H. Merrill (Maine Sta. Bui. 34, pp. 8, 

 fig. 1, dgm. 1). — This is a brief popular summary of results of experiments given iu 

 detail in the Annual Report of the station for 1895, p. 10 (E. S. R., 8, p. 757). 



Experiments on the action of the phosphoric acid and nitrogen of peat and 

 excreta mixture and poudrette, M. Maercker ( Mitt. dent, landw. Gesell.. 12(1897), 

 No. 16, p. 208). 



Experiments with samples of poudrette -which had been treated with dif- 

 ferent amounts of sulphuric acid, M. Maerckek (Mitt. deut. landw. Gesell., IS 

 (1897), No. 14, p. 194). — Nitrogen of poudrette treated with sulphuric acid was more 

 effective than that of poudrette not so treated. Doubling the amount of sulphuric 

 acid produced no perceptible increase in the availability of the nitrogen. 



Fertilizer inspection, C. D. Woods (Maine Sta. Bui. 33, pp. 16). — This bulletin 

 gives the text of the State fertilizer law, a schedule of trade values of fertilizing 

 ingredients for 1896, with notes on valuation and tabulated analyses of 105 samples 

 of fertilizing materials. 



Citrate solubility of Thomas slag, H. Dubbers (Chan. Ztg., 21 (1897), No. 66, 

 p. 054). — Quotes Petermann in Bui. Sta. Agron. Gembloux, 1897, No. 61, in opposi- 

 tion to the selling of this fertilizer on the basis of citrate solubility instead of on 

 the. basis of total phosphoric acid and "line meal." 



Citrate solubility of Thomas slag, Ellmann {('hem. Ztg., 21 (1897), So. 70, 

 p. 700). 



FIELD CROPS. 



Manurial conditions affecting the malting quality of English 

 barley, J. M. H. Munro and E. S, Beaven (Jour. Roy. Agr. Soc. Eng- 

 land, 8 (1897), 29, pp. 65-114, figs. 9).— The article compares barley 

 and wheat culture in England, describes desirable qualities of barley 



