234 EXPERIMENT STATION EECORD. 



amounts of from ].r>to^kg. per 1,000 kg. of live weight of animal were without 

 effect in preventing lof^s of nitrogen. The addition of sulphuric acid reduced the 

 loss of nitrogen, l)ut not to a sufficient extent to make the practice profitable. The 

 indications are that the nitrogen escaped from the manure mainly in elementary 

 lorni. 



Conservation of cow dung, D. N. Mookerii {Ann. RjA. Bnrdwnn Expi. Fann 

 lUOO-01. Dcpt. Lcmd Reconh and Agr., Bengal, 1902, pp. 12, IS). 



On sawdust as fertilizer, (t. Loges {Deul. Landw. Prease, 29 {1902), No. 70, p. 

 622). — Tlie objections to sawdust as a fertilizer are pointed out. 



Chemical-ag-ricultural investigations on the fertilizing value of beans, E. 

 DE C'lLLis (,S'^;~. Siicf. Agr. It(d., So {1902), No». 2-S, pp. 85-128, fig. 1; 4-5, pp. 289- 

 368; G, pp. 441-495, fig^. 5). — A discussion J)ased upon a large amount of analytical 

 and experimental data of the extent to which soils are enriched in nitrogen by the 

 growth of beans, the influence on the succeeding crop, and the possibility of increas- 

 ing the fertilizing capacity of beans. 



Studies in denitrification, E. B. Voorhees {.Tour. Amer. Chem. Soc.,24 {1902), No. 

 9, 2>p. 785-82S). — The plan, scoi:)e, and some of the results of the investigations here 

 reported have already been noted (E. S. R., 13, p. 727). The first part of the article 

 is a review of other investigations on the subject, containing a list of references of 80 

 entries; the second part summarizes the results of experiments during 3 years at 

 the station, in cylinders of galvanized iron 4 ft. long and 23.5 in. in diameter, on the 

 availability of the nitrogen of fresh and leached solid and liquid cow manure, of 

 sodium nitrate, of ammonium sulphate, and of dried blood alone and combined. 

 The amounts of nitrogen applied and recovered in the crops (corn, oats, and millet) 

 were used as a measure of the availability. The results, which are reported in 

 detail, indicate that with applications of manure not exceeding 20 tons per acre there 

 was no denitrification in the cylinder tests, although laboratory work had shown 

 "cleaily that nitrates when in contact wath manure are destroyed by the organisms 

 contained in the latter; that this destruction of iiitrates is essentially a reducing 

 process; that the larger portion is set free as gaseous nitrogen, and that a part of it is 

 converted into animonia and part of it into insoluble organic nitrogen, not suited to 

 supply tlie innneiliate nitrogen requirements of the growing crop." 



By-product of ammonia and soda manufacture as fertilizers, A. M. Gkimm 

 {ZlsrJtr. Landir. VrrmrJi.^iv. Oesterr., 5 {1902), pp. 918-920; abs. in Chem. Ceutbl., 1902, 

 TT, No. 11, p. 761). — This material contains 32 per cent of lime in air-dry condition 

 and 20 per cent in the fresh condition. 



On the use of calcium-carbid residue in agriculture, M. Gerlach {F'dJdivg's 

 Lotidir. '/Ag., 51 {1902), No. S, pp. 81-87; '//;.s. in Chem. ( Yrdl,!., 1902, TT, No. 11, p. 764) .— 

 This material, which contains in moist condition 49.52 per cent of free water, 7.33 per 

 cent of calcium carbonate, 40. ()9 per cent of calcium hydrate, and 0.43 per cent of 

 insolul)le matter, is recommended as a useful lime fertilizer. 



Analyses of commercial fertilizers and manurial substances, C. A. Goess- 

 MANN {Massachu.vtl,^ Sta. Bui. S3, pp. 24). — Analyses are reported of 175 samples of 

 fertilizers collected in the course of regular fertilizer inspection during 1902, and of 

 58 samples of fertilizing materials sent to the station for examination, including 

 mixed fertilizers, wood ashes, lime ashes, cotton-hull ashes, coral formation, dry 

 ground fish, ground bone, sulphate of potash, carbonate of potash, nitre lime, vege- 

 table potash, acid phospliate, tobacco stalks, wool waste, castor pomace, and soils. 



Analysis of commercial fertilizers, J. L. Hills, C. H. Jones, and B. O. White 

 ( Vermont Sta. Bid. 93, pp. 83-126). — This bulletin contains a report of analyses and 

 valuations of 136 brands of fertilizers, the output of 8 companies, sampled and exam- 

 ined during the spring of 1902; a discussion of the results of the inspection; a com- 

 parison of the average composition of fertilizers in 1902 and in previous years; and 

 fornuilas and directions for making home mixtures of fertilizers. Nine-tenths of the 



