400 REPORT OF THE INSPECTION WORK OF THE 
result of study of the prices actually prevailing in the large 
markets of these states. 
These trade-values represent, as nearly as can be estimated, 
the average prices at which, during the six months preceding 
March, the respective ingredients, in the form of unmixed raw 
materials, could be bought at retail for cash in our large markets. 
These prices also correspond (except in case of available phos- 
phoric acid) to the average wholesale prices for the six months 
preceding March, plus about 20 per ct., in case of goods for which 
there are wholesale quotations. 
TRADE-VALUES OF PLANT-Foop ELEMENTS IN RAW MATERIALS AND 
CHEMICALS. 
Cents ae 
Natrogen, in. ammonia, Salis... ass. ore ae ae ee 17% 
e HEL, EDUCA URR 3. Sic aia. ew Sik oe eee eRe ee 16 
Organic nitrogen in dry and fine-ground fish, meat and 
blood and mixed fertilizers........ 17% 
25 in fine-ground bone and tankage..... it 
5 in medium bone and tankage........ 12% 
Phosphoric “acid, “water-soluble. .... ccc « wis cee Gee AV, 
“ citrate-soluble (reverted) ........... 4 
. in fine-ground fish, bone and tankage, 4 
= in cottonseed meal, caster-pomace and 
sshieson. |. cytes ee ge pe oe ee 4 
in coarse fish, bone and tankage...... 3 
as in mixed fertilizers, insoluble in am- 
monium citrate of water.......... 2 
Potash as high-grade sulphate, in forms free from muri- | 
ates (chlorides), im sashes, sCtG, Jit ee oo eee ieee 5 
Potash, in -MVaPiabe. 3. ..5. 2.6% ae aio does hese ee cane 414 
COMPARISON OF SELLING PRICE AND COMMERCIAL VALUATION. 
Giving to the different constituents the values assigned in the 
schedule for mixed fertilizers, 17144 cents a pound for nitrogen, 
414 cents a pound for water-soluble phosphoric acid, 4 cents a 
pound for citrate-soluble phosphorie acid, 2 cents a pound for 
insoluble phosphoric acid, and 414 cents a pound for potash, we 
can calculate the commercial valuation, or the price at which the 
separate unmixed materials contained in one ton of fertilizer, 
