New York AGRICULTURAL EXPERIMENT STATION. 187 
Toop RIE D'BLOOD, 
The important commercial constituent of dried blood is 
nitrogen. In the samples examined, the blood varies from about 
9g to 15 per ct. of nitrogen. One sample, containing only 8.32 per 
ct. of nitrogen, had been damaged by fire and had suffered loss 
of nitrogen. Dried blood of good commercial quality should con- 
tain not less than Io per ct. of nitrogien. 
TABLE IT.— ANALYSES OF DRIED BLoop. 




Number Number 
of Nitrogen. of Nitrogen. 
sample. sample. 
Per ct Per ct 
MS ee, , , ects oes ba * 10.10 Sse ROL Ah eet aM 10.45 
SA ho eS Pe a 10.90 HSOMiNese seu oe er ee LT02 
LS os LAL oid aed are Pesoz, wD Ne Ga te ene SNS Pare 10.01 
ate. Sabai RS a 12 ai TOGA Ai ae Mee oh tee: 11.89 
HOV od S| oe 2S 10.21 CONAA Merwe ihc States nek nes 9.18 
ce Can dR Oe AR a 11.69 Aap Ca puy ta Bee Ta Mea bee Oo 12.08 
Ret oo ns once Gf acl eee 14.93 AQT WEOWIKeL Sahiayucietnd 4 10.80 
AROS ee Se how a os 10.39 LOSS IO WlEt Se, Se keen ce 4 13.64 
Dei els yarn ne Se Spee ean Le oa 

Rie Ne ie te) Bei 7X. 
The important element in nitrate of soda for agriculture is 
nitrogen. This substance when chemically pure contains 16.47 
per ct. of nitrogen, but the form used in agriculture contains 
some impurities. Nitrate of soda, when exposed to dampness, 
absorbs considerable moisture. The presence of impurities and 
moisture reduces the percentage of nitrogen. Nitrate of soda 
of good commercial quality should contain 15.5 to 16 per ct. 
of nitrogen.. In the samples examined, the percentage of 
nitrogen varies from 15.33 to 16.20. 
TABLE JIJ.— ANALYSES OF NITRATE OF SODA. 


it NUMBER OF SAMPLE. Nitrogen. NUMBER OF SAMPLE. Nitrogen. 
Per ct. Per ct, 
A eh as eA LR ere OU Oe wirmemerdte eget sia: Someta aah catty ae EA 15.55 
PMR CHAINS ic dle wd wiedcs e+ LO RESA Reimer pete. certs ota oh eros sean Pe Nayak 
bi BENS 1: ae eS ik VOR OS No ii, Oana ree Nico ee cede states ere 16.20 
CIS 0 cays 15.82 
Se ao SSE Sees ta yn es awe | 

IV. MEAT MEAL AND TANKAGE. 
Meat meal contains nitrogen as its most important constituent 
in relation to fertilizers. Tankage is a mixture of refuse meat 
and bone in varying proportions. Tankage contains as its im- 
