626 EXPERIMENT STATION RECORD. 



The reported results show that — 



"(1) The best yields were obtained with the lime in the form of a carbonate, the 

 finely ground oyster shells standing first and the shell marl standing second. This 

 was further substantiated when the stone lime was applied as a top-dressing and 

 given an opportunity to form carbonate of lime by absorption of carbonic acid from 

 the atmosphere. 



"(2) Pure magne-sium lime, which is commonly claimed to l)e poisonous to the 

 soil and crop, gave the highest yield. 



" (3) Barium oxid, which is not a plant food, produced very nearly as much 

 increase in the yields as the calcium oxid, and more increase than the sulphate or 

 phosphate of lime. This would seem to indicate that there was some effect produced 

 on the soil rather than that the plants needed lime as a plant food. 

 . "(4) The lime applied so as to slake in the soil produced a slightiy better total 

 yield than when first slaked and harrowed in. 



" (5) Stone lime and shell lime were of about the same value on the soil. 



" (6) Lime with fertilizer was more profitable than fertilizer alone. 



" { 7 ) All the applications of lime increased the yields. ' ' 



Experiments in denitrification, T. B. Wood {Bd. Agr. \Lon(lon\ 

 Rpt. Ayr. Education and Research ^ISDO-IOOO^ pp. 12!^^ 12o). — Experi- 

 ments on oats with nitrate of soda alone and combined with fresh (long) 

 and well-rotted (short) manure on a heavy and rather wet clay soil in 

 1S98 and on a lighter humus soil resting* on bowlder clay in 1S99 are 

 briefly reported. The manure was used at rates of 10 and 20 tons per 

 acre. The average 3delds were greater with nitrate alone than with 

 nitrate and manure, the difference being especially marked in case of 

 the long manure. With nitrate alone there was an increase of grain 

 of 9i bu. per acre in 1S99; with nitrate and long manure there was 

 practically no increase. 



Analyses of coniinercial fertilizers, C. A. Goessmann {Mnssachv setts Hatch Sta. 

 Bill. 68, pjy. 28). — This bulletin reports analyses of 275 samples of fertilizing materials, 

 including wood ashes, limekiln ashes, leather-scrap ashes, cotton-hull ashes, silicate, 

 muriate, and sulphate of potash, kainit, nitrate of soda, sulphate of ammonia, bone, 

 tankage, apatite. South Carolina rock phosphate, odorless phosphate, castor pomace, 

 stable refuse, cotton waste, and mixed fertilizers. 



Analyses of commercial fertilizers, J. Hamilton and W. Freak {Pcnnsyjranla 

 Dept. Arjr. Ept. 1899, pt. 1, pp. S,.^l-.974) .—This includes the text of the Pennsylvania 

 fertilizer law, notes on valuation of fertilizers, tabulated analyses and valuations of 

 fertilizers examined durinsr 1899, and a list of fertilizer manufacturers securing 

 licenses for the sale of fertilizers in Pennsylvania in 1899. 



Commercial fertilizers, H. J. Wheeler, B. L. Hartwell, et al. {Rhode I.'<l(tnd Sta. 

 Bui. 67, pp. 151-156) . — Analyses and valuations, accompanied by guarantees, of l-i 

 samples of fertilizers are reported, with a schedule of prices used in the valuation of 

 fertilizers and brief notes on the conduct of the fertilizer inspection. 



Analyses of commercial fertilizers {South Carolina Sta. Bid. 54, pp. IS). — This 

 bulletin includes a table of prices of unmixed fertilizing materials and tabulated 

 analyses and valuations of 154 samples of fertilizers examined during the season of 

 1899-1900. 



Analyses of fertilizing materials, P. Boname {Rap. An. Sta. Agron. [J/f/fuvV/i/.*], 

 1898-99, pp. 18-M). — Analyses of ashes of bagasse and dry cane leaves, calcareous 

 sea sand, and lime used fur agricultural purposes are reported. 



