SOILS FERTILIZERS. 825 



silica, iron, alumina, etc. The niatorial is considered a valuable lime fertilizer, 

 l)Ut should be tliorou>;lily saturared with water and aerated before crops are 

 planted <>n land to which it is aiiplied. This is best done by spreadiuf; on bare 

 land in winter a considerable time before planting the crop. 



Utilizing the dogfish. A. .J. Fleming {Daily Consular and Trade Rpts. 

 I /■. .S. I, IDOS, \<>. ,iSSi), i»iK 13, /./). — The methods and appliances used at Causo 

 and Chirks Harbor, Nova Scotia, and at Shipegan, Xew Brunswick, for ex- 

 tractinf: oil from dojifish and making; fertilizer from the residue are described. 

 The Canso works are iilanned to reduce about 2.") tons of tish in 24 hours, and 

 the Clarks Harbor plant will reduce oO tons of tish in 10 hours. The works 

 have proved remunerative both to the operators and to tishermen. 



Utilizing stock-yard waste (Breeder's Gaz., 5'/ (IDOS), Xo. 20, pp. 90.i, 

 iHMl). — This article briefly discusses the increased demand for and improved 

 methods of handling the large accumulations of stock-yard manure. It calls 

 attention to the fact that a product that was formerly dumped into the streams 

 or pitten rid of by some other simple means can now be completely disposed 

 of as a fertilizer at prices of from .$<) to $S per carload of coarse manure and 

 of $1S per ton for assorted pulverized manure in bags. 



The disposal of sewage sludge (C'Jiein. Trade Jour., //.? (1!)08), A'o. 1115. p. 

 SOU). — The (Jrossniann process in use at Manchester, England, is described. 

 This consists essentially of mixing the pressed sludge with a small quantity of 

 acid and subjecting it to the action of superheated steam. This removes fatty 

 matter and leaves behind a dry, practically odorless material containing 2 

 per cent of ammonia and about 2 per cent each of phosphoric acid and potash. 



Sewage sludge as a manure (Times [London], 190S. t^cpt. 28; abs. in Jour 

 Hoe. Chein. Indus., 27 (l!)(J8), Xo. 19, p. 995). — In this article reference is made 

 to a report published in a i)arliamentary paper of experiments made by the 

 Hritish lioard of Agriculture to test the fertilizing value of different kinds of 

 sludge on mangels, turnii)s, and grass under ordinary farm conditions, and (m 

 wheat in i)ot experiments. None of the sludges showed any particular value 

 as a fertilizer. 



Chemicals and allied products, C. E. INIunroic (Bur. of the Census [ r. .S.l, 

 Maiifrs. 190.'). pi. ). pp. ,i97-ol2). — This report gives statistics 'of lU'oduction, 

 consumption, and imports up to and including T.K)"), the statistics of most in- 

 terest fmrn an agricultural standpoint being those relating to acids, ashes, and 

 other fertilizers. 



According to the statistics given the total value of the fertilizer output in 

 the I'nited States in V.M') was $ij(;,(>32,sr»;i. an increase of 2().S per cent over the 

 value in IJMM); the number of establishments was 4t)0. a decrease of about 5 per 

 cent since 1!MK>. in the same time the cajtital invested (.$(« (.028.2(^4 in l!«rt) 

 had increased about 14 per cent, the number of salaried oflicials had decreased 

 ?».."» |»er cent, and salaries S.7 per cent: the number of wage-earners had 

 increased 22.C. jier cent and wages 22.!) i)er cent, nf the total output, 1.(>70.;»7S 

 tons, valued at .$!(;. |<.i.",.ii(K;, was suiici-i>liosi)hale : 7sl.;!.-.4 tons, v.ilued at ."?i;*..- 

 (»2(».S2."», was annnoiiiated superi»hosphate ; 1,(>(>;!.S47 tons, valued at !f;il,;{()."),(>r)7, 

 was complete fertilizer: and 4T.>,.S(»;{ tons, valued at !i;4.S2( ),()">(>, miscellaneous. 

 The largest increase (over 4(X) per cent) during lUOO to 15)05 was in anmioniated 

 superphosphate. 



The South Atlantic States lead in both quantity and value of fertilizer iirod- 

 iicts. the No:-th Atlantic Slates b«'ing .swond, the South Central third, and the 

 North Central fourth. 



