FERTILIZERS. 933 



"It is clear from tliese figures, as well as from otlicr r-csiills previously published 

 by this station and by other observers, that the .solubility of organic nitrogen in 

 materials generally regarded as quickly acting fertilizers, such as blood, cotton seed, 

 castor pomace, fish, tankage, bone and the like, may range from about (JO to nearly 

 100 per cent. 



"There is no reason to suppose that those with the low(!r solubility named are 

 less effective fertilizers than those whose solubility in pepsin solution is relatively 

 high. 



"It is evident, therefore, that it would be (|nite jxjssible to mix inferior nitroge- 

 nous matter, like leather, liair, etc., with its own weight of some approved form of 

 nitrogen, which had exceptionally high .solubility in pejisin solution, and produce a 

 mixture which would not be certainly detected by the test described above. It is 

 only when the solubility is 50 per cent, or lower, that it is reasonable to suspect the 

 presence of inferior or inert forms of nitrogen." 



On the fertilizing' value of stable manure mixed with a litter of tobacco 

 stems, N. Passrrini (SUtz. Sper. Ayr. Ital., 38 {1900), No. 5, pp. 44I-445 ) .—Kxperi- 

 ments are briefly reported in which tobacco stems were u.sed as litter with stable 

 manure, yielding a product after fermentation which had the following composition: 

 Nitrogen 0.84 per cent, ])hosphoric acid 0.62 i)er cent, and potash 1.97 per cent, the 

 tobacco stems supplying 0.26 per cent of nitrogen, 0.32 per cent of phosphori(! acid, 

 and 1.47 per cent of ])Otash. 



Filter-press cake as a fertilizer ( West Indian Bid., 1 {1900), No. 4, p. 395; abs. 

 in Jonr. Soc. C'hem. Ind., 19 {1901), No. 12, p. 1125).—li\s stated that 1,000 lbs. of 

 cake as obtained in the sugarhouse contains about 7 lbs. of nitrogen and 5 l))s. of 

 phosphoric acid. 



Jadoo fiber {Jahresber. Vers. Stat, u Schule, WMensweil, 1897-9S, pp. 49-r>0).— 

 This w'as found to be peat moss soaked in a solution of fertilizer material. Upon 

 analysis it showed 0.76 per cent of nitrogen, 0.56 })er cent of phosphoric; acid, and 

 0.21 per cent of water-soluble potash. 



Analyses of fertilizers, C. A. Goessmann {MasmcJinfteltii Jfalrli Sin. Iliil. 70, pp. 

 26). — Analyses are reported of 231 samples of fertilizing materials, including wood 

 a.shes, sulphate of potash, muriate of potash, potash and magnesia sulphate, nitrate 

 of soda, ground fish, cowpea and soy-bean plants, river and })ond muck, sewage 

 sludge, peat, soot, barnyard manure, sheep manure, cotton waste, product from gar- 

 bage plant, tobacco stalks, bat guano, ground bone, dissolved boneblack, Florida rock 

 phosphate, mixed fertilizers, and .soils. 



Fertilizer analyses, R. C. Kedzie {Michigan Sta. Bid. 185, pjx 269-281).— This 

 includes tabulated analyses, accompanied by guarantees, of 81 samples of fertilizers 

 examined during 1900, with brief explanatory notes. 



Fertilizer analyses — fall season, 1900, B. W. Kit>gore {Bid. North Carolina 

 Slate Bd.Agr., 22 {1901), No. 1, pp. 3-16, 19-29) .—'nn^ includes notes on valuation, 

 freight rates from the seaboard to interior points, a list of fertilizers registered for 

 1 901, and analy.ses and valuations of 131 .samples of fertilizers. There are also included 

 a brief report on analy.ses of miscellaneous fertilizing materials, including maris, wood 

 ashes, cotton-hull aslies, coinpt)st, tol)acco stems and ilust, tobaci'o stem ashes, and 

 liarnyard manure, and a warning against a so-called manual of secret i)rocesses for 

 the manufacture of home-made fertilizers. 



Commercial fertilizers, II. J. Wheei.er, 15. I>. IIaktwell, et ai.. {J'Jiodc TdandSta. 

 Bid. 73, pp. 39-50). — This bulletin contains analyses and valuations of 59 samples of 

 fertilizers examined during 1900 in addition to those reported in previous bulletins 

 (E. S. R., 12, pp. 626, 737). In addition to the mixed fertilizers examined analyses 

 are reported of 8 samples of wood ashes, 3 of muriate of potash, and 3 of nitrate of 

 soda. A sunnnary of the results of fertilizer inspection in the State during 1900 and 

 previous years shows that in 1900 84.9 jjer cent of the fertilizers were equal to or above 



