ik Sinaia Chemisiry. 423 
that miei = the oes effect in sient’ loss of water, and 
is not capable of measurement in field bese: that gypsum has the 
tte of a body that ches moistur 
e the above was written, we find that Liebig has also anticipated 
Debérain | in the discovery that potash is liberated from the soil by the 
magnesia is liberated by g psum to a considerable degree. His results 
are given in the following table. 
From 300 grms, of soil are dissolved by a liter 
of distilled water. of gypsum water. 
grms, of magnesia. 
Soil of hae aes <u ee Dee 00706 
sshein, - - - - 0°0316 00878 
Subsoil pr Bogen, - - - - 00122 00842 
il of Botanical Gar - 54 01686 
Bogen oausen, No 0. I? unplastered, 00266 01016 
IL? p la te 0°0382 00480 
«  $cho a f, 00086 00634 
“Alabama eoteeis field, - - - 070019 0:0038 
Liebig contents himself with comma NRGae the simple results of his 
experiments without venturing to draw any definite conclusions from 
We remark that they fully confirm our views above expressed. 
IV. MINERALOGY AND GEOLOGY. 
: Mis Pet phosphatic in guano) rock from the Island of Sombrero, W. I. 
men of the phosphatic rock from the Island of Sombrero has 
ben ese i Dr. T. L. Putrson’ as a new mineral species under 
na “ Som ‘ 
The characters given by Phipson are as follows 
rite presents itself in nature as a whit yellowish white, or 
reddich salons rock, having a straight fracture, and, in some portions, 
in reality th k is ver rous. It shows no signs of ¢ stallization 
whatever, but nection like an amorphous, gelatinous phosphate that has 
— submitted nar a to fle tem ato — It is ee. to be ? -com- 
nae 
83 
“i 
3 
nH 
> 
ue 
cu 8 
i 
a 
Ss 
= 
S 
So 
ee, 
a 
i 
@ 3 
= 
@ 
2 This soil is one whose ree is ae enhanced eg mea 
* Journal of the Chemical Society, xv, 277. 
