SOILS— r Kirn i.izEHS. 19 



Tlio rcsuKs \v(M'0 ill nil cnscs r.noinlilc In llic lime nil rn^cii cxcciit Hint flio 

 grain protluctHl with this fcrtili/cr coiitniiicd a soincwiint siimllcr pcrcciitn.^c of 

 nitrogen than that pnxhiccd willi iiilrntc of soda. 



Calcium cyanamid and calcium nitrate, two new fertilizers derived from 

 atmospheric nitrogen, and results of their use, II. vo.n Fkii.itzkn (dsfcn: 

 Moor, yjxclir.. 7 ( l'.)(i(;\, p. .is ; <il,s. in Cliciii. Zti/.. ■!<> ( HKiC). Vo. .?'/, Rvixrt. \o. 

 1.'. p. /'/.O.-'riic fcrtili/,iii^ xaluc of ilicsc iiintcrials is discussed, especial atten- 

 tion Ixini,' ixiNeii to the resulls of tests i>\' liVLtroscopic niid itasie calcium nitrate 

 in comparison with sodium iiitrat". II was found that these materials \vei'(! 

 ahout e(|uall.v effectiNC as fertilizers. 



A new nitrogenous manure, lime nitrogen or calcium cyanamid, J. IIen- 

 DIUCK {'rniiiK. Uii/IildJid (111(1 A(ir. Soc. Scot., .7. ■'<cr.. IS (l!)l)(l), jt)). 7.7-77). — 

 ( "omi)arati\'e tests of calcium cyanamid, iiitr;ile (jf sod.-i, and sulidiate of 

 aiiiinoiiia in pot and field experiments with oats and h.irley are reported. '" The 

 results show that the c\;iiiamid .i;i\'es returns \ery little behind those .^ixi'ii hy 

 nitrate of soda or sulphate of ammoiii;i." 



Experiments with lime nitrogen as a fertilizer for sugar beets, F. Stroii- 

 >Mi':ii ((islciT. riiinn-. Zlsclir. Zucl^crindii^. ii. Laiidir.. ,>'i {I'.Xl.')), pp. GGt-GS'i; 

 (ihs. ill Cliciii. Cciitlil.. r.)i)i!. J. .Vo. !l. p. 7.S7). — When .-ipiilied l.l days hefore 

 plantintc, the lime nitroj;en produced no injurious effects and jiroved Init little 

 less ellicieiit than sodium nitrate and superior to anunoniuni sulphate both as 

 i'e.i,'ards yield and (|ualit\' of hee-ts. 



Experiments on the action of nitrogen lime, (). ISoTic iikh (Dciit. l^aiidir. 

 Prcssc, 33 (HKK!). .Vo. 3',. pp. .>S<). 2!)0}. — Pot experiments on oats with so-called 

 nitrogen lime (tStichstoffL-dU,-), which is prepared hy iiassiuu atmospheric nitro- 

 gen freed from oxygen over a fused mixture of calcium carhid and calcined cal- 

 cium chlorid and containing about 22 per cent of iiitrcvgeii, are reported. The 

 results show that this material is very similar in its act inn t:) calcium cyanamid 

 (lime nitrogen), that like it it should not he used ;is a top-di'essing, and should 

 li(> .aiijilied some tinu> before planting seed. 



Lime nitrogen, K. S.iollema (Cult lira, IS (HXKi). A'o.s. 200. pp. 3-27; 210, pp. 

 HO-97). — Investigations on the fertilizing value of lime nitrogen ar(> (piite fully 

 reviewed and exiieriments hy the author on rye and oats are reported which 

 .-■■how that th(> lime nitrogen (lSO-27() lbs. |>er acre) was as a rule nearly as 

 ellicieiit as nil rate of soda ;iiid soiiiewh:it nuu'e so than sulphate of ammonia. 

 A mixture of K'.-l lbs. of lime nitrogen and IS.O Ihs. of nitrate of soda per acre 

 gave the highest increase in yield in case of rye. 



The results of experiments with calcium cyanamid (lime nitrogen), 

 A. Pozzoi.i (.l/y.v. /;/ CJiciii. Zt(/.. 3ii (IHOH), A o. 3s. p. -'/.7//). — This is an abstract 

 of a paper presented at the Sixtli International C'ongress of Applied Chemistry 

 at Rome in 19(H>. reviewing the results of .tests by various investigators of the 

 fertilizing value of this material. It is jiointed out that the results of a large 

 number of experiments show that the action of this material varies widely with 

 different plants. 



Kxperinients by Frank are cited to show that the injurious effects observed 

 in the use of lim(» uitrogen as ;i top-dressing in ]){)t experiments would not be 

 ob.serv(>d in jiractice where much smaller amounts of tlie matei'ial would he 

 used. l''xiieriments by the same investigator .also indicate that the fear of 

 injury from :icetyleiie gas, which m;iy be geiiei'ated in small amounts wluai 

 lime nitrogen is .-iitplied to suils, is groundless. lOxperimeiits with various 

 plants showed no injury from the presence of this gas. 



The various factors which influence the decomposition of calcium cyana- 

 mid, J. Stoki..\s.\ (.1/>.s'. ill rhciii. Zt(i.. .Ill {lUiiO), So. 3S, p, }.7.7). — This is an 



