324 








ee Fp Sain Soe ESE 
i: > C “4 ‘S BL Sat) eu 
as Be : re st b Og | OB Ay 
Aq 4 =O S = = 3 © S we? 
oo y <3 = 3 ce So as |e 3 | So 
38 dete ales = g ag aq we | e8e] oF 
og | 32) 48 | & | & | 68). 98: | Sel) soa) eae 
A oO — = 
34 sa) bu |, & ae Bae ao wo | #S8l use 
a < ee e Ay Ay A Ay O Ay 
1884 |Grams./Grams.| cc. |Grams./Grams. 1885. Per ct.|Grams.|Per ct. 
1 |Dec. 27.--- 200 10 250 294 1.329 |Feb. 20.-.-| .000394 | .0985 7.411 
2 SZ aR 100 10 250 147 1.329 © -20__.-| 000762 | .1765 13.28 
3 FE OO nies 100 - 250 147 1.329 |Jan. 12....| None. 0 0 
4 CS D0 ret, 100 10 250 | .147 1.329 |Feb. 20_...| .1176 294 21.37 
1885 
5 iiJan.4 be. 100 10 250 147 1.829 |Feb. 20_...| .0296 O74 18.40 
Beets i Bes- 2h $400 250 147 1.608*} ‘* 20....| 1.638 4095 25.46 

* See remarks at beginning. 
South Carolina Phosphate Rock. 
A few experiments have been made with finely ground unacidu- 
lated Charleston phosphate rock. 
The treatment was similar to the last experiments, save that drain- 
age water from the plats was used in the three first, spring water in 
the fourth, and to the fifth was added 5cec. HCl. 
Where no earth was used only traces of P, O, were found, but 
when the water was slightly acidulated, though no earth was used, 
considerable P, O, was rendered soluble. 




eal Lo} 1 wo | oO i] 
ax I q 5 N& Os Oos 
UIE s 2 0) 2 a6 cing © 
3.2 | 38 | fs | SE oo | eee 
260 ~— od ~ 3a 44 a baa} 
8 | a. qi Pane) Bei aad 
© opm =e) . Bad | = BEG 2 OO 
Ses an C28 g 32 Pas Beek 
3p = .25 = =F= afia ke} Beem 
a <q Zz <q AR a4 oO 
1885. Grams. Grams. ce. 1885. 
Li May? 18451825: 200 250 Jilly Os ssteeee Traces. 
> fe i eet Pein reitare 150 150 250 aa AY yank .61176 0294 
SU HOD. s0ee nase 200 250 May 16-.----.-- Traces. 
pt tO cae 150 150 250 oo WB: 4 ete * 0092 0280 
Bios 1-26rise7--6 200 250 $16 oe 084 .0850 
Equal quantities, by measure, of the ground phosphate rock and 
wheat bran were thoroughly mixed together and kept moist and 
warm to induce fermentation. At the end of one week a sample 
was taken, dried and sifted to free from bran, and P, O, determined. 
Less than .1 per cent. of soluble P, O, was found. 
Fermentation did not, in this case, render soluble much of the 
phosphoric acid of the ground rock. 

SS eee 
en 
