136 



(3) The effect of the temperature of 110° is grei^ter in the determination on 

 the hay than on the bran and cotton-seed meal. This seems to indicate either 

 the presence of a greater percentage of easily volatilized constituents in the 

 hay, or that the hay gives up its moisture with more difficulty. 



Examinations of products in the current of air passed over hay 

 implied that the latter loses more by volatilization and oxidation than 

 the other materials. 



Drying at 100° in a current of hydrogen, appears, therefore, all things con- 

 sidered, to offer the least objection and the nearest approach to a correct 

 determination of the hygroscopic moisture in fodder. 



The detI'^rmikatioi"? of nitrogen by the azotometric treatment 

 or the solution resulting erom the Kjeldahl digestion, W. p. 

 Cutter, B. S. (pp. 26, 27). — Experiments were made to test the 

 value of the azotometric method, as recommended by Schoenherr, 

 for determining tlie annnonia from the Kjeldahl digestion process. 

 A modification of the Knop-Wagner azotometer was used. The 

 averages of the results obtained bj^ the azotometer when the solution 

 was not neutralized before treatment with hypobromide were nearly 

 identical with those by distillation in the ordinary way. The azoto- 

 metric method has the advantage of not requiring so great, purity of 

 re-agents as the distillation method, but taking into account the time 

 and labor, the practical value of the former method is doubtful. 



Fodders and feeding stuffs, ^Y. P. Cutter, B. S. (pp. 27, 28). — 

 This includes a tal)ular record of analyses of fodder corn, wheat bran, 

 cotton-seed meal, turnij^s, and cotton-seed hulls. 



XORTH CAROLINA. 



North Carolina Agricultural Experiment Station. 

 Location, Raleigh. Director, H. B. Battle, Ph. D. 



BULLETIN No. 611, FEBRUARY 12, 1889. 



Fertilizer analyses (pp. 2— t).— This is a partial list of analyses 

 of licensed commercial fertilizers for 1889 and includes reports on 

 tAventy-seven different brands. Mention is also made of advance in 

 cost of raw material used for manufacturing fertilizers, of material 

 for bags, and of freights by water. 



Seed exa^i [nation for planters (p. 4). — This Station is now 

 equipped for an examination of seeds with reference to their purity 

 and capacity to germinate, and will make seed tests for planters free 

 of charge if the samples are properly taken and correctly described. 

 A form is given for describing samples, with directions for taking 



them. 



BULLETIN No. 02, FEBRUARY 28, 1889. 



Fertilizer analyses and the fertilizer control for 1889, H. B. 

 Battle, Ph. D. (pp. 86-99). — The objects of the fertilizer control 



