182 Dr. Mallet’s Analyses for 
4. 2 8. 
(Carbonate of lime, . 75°07 80°48 64°37 
g | Carbonate of magnesia, - ‘72 53 ‘79 
= Peroxyd of iron, - : 1:44 1:24 2°19 
=‘ Alumina, - - . ‘79 98 ‘75 
ab | Phosphate of lime (8CaO, Po®), 40385 ‘3710 5432 
ey ee ee 14 194 059 
2) ee - 11°99 904 19°58 
g | Alumina, - - - 8:38 2°19 3°97 
= Peroxydofiron, - — - 1:84 1:55 2°49 
@ | Lime, : > : - 147 1-01 ‘78 
2|Magnesia,— - - . —— — trace 
(Potash, - . - - 0945 11385 0410 
T, 2°49 ‘22 58 
99°83 99-91 99-14 
No. 1 was from Demopolis; its sp. gr. =1-976 (containing air 
between its particles). No. 2 was from Jones Bluff on the Tom- 
bigbee River; sp. gr. =2-0 No. 3 from Cahawba; sp. gr. = 
19 he alkali, which was sought for with particular care, 
ence to its agricultural value and the content of several — 
c eter- 
Sie =< os oe Aw oes 
Alumina, . - me i - - 656 
Protoxydofiron,- - - +) +» » 2018 
a tel wider. sat te ent? wo ee 
Minmiag: cee eerie vent “encete 1:70 
Potash; -. -- agrees: off sont x eee 
Water, baftin shecr sys eearkar 8:17 
| 100-04 
and another analysis of a specimen from the same locality gave 
