CLAYS, SOILS, ETC. 221 
i) 
D. White clay, derived from sericite schist, South Mountain, Pennsylvania. Col- 
lected by G. W. Stose. Analysis by W. T. Schaller, record No. 2302. 
EtoH. Fire clays from Johnstown quadrangle, Pennsylvania. Collected by 
W.C. Phalen. Partial analyses by E. C. Sullivan, record No. 2281. 
E F G. H 
66. 4 50.3 53.1 
19.8 21.3 27.8 
1.68 | 10.4 3. 08 
61 61 - 60 
sctneceaacmemeest a -10 39 22 
-30 18 48 
3.24 114 3. 58 
iO2 . 1.0 79 1.2 
AMNION own enocnweuevereeennserere moves quese eAewEeanaeewe ere eeceMeNRNS: 6.5 6.4 12.0 10.2 
2 Total iron. 
MARYLAND. 
Clays from the Matawan formation, received from W. B. Clark. Analyses by George 
Steiger, record No. 1684. 
A. Below Barnard’s wharf, near Betterton, Kent County. 
B. Severn River, below Round Bay, Anne Arundel County. 
C. Magothy River, near Wilson’s wharf, Anne Arundel County. 
D. Fort Washington Bluff. 
27 52 90 
10 -29 57 
14 -16 59 
90 1.16 1.92 
32 - 69 1.09 
1.90 2. 24 3.07 
none 21 1.04 
98.09 | 99.39 | 98.16 96. 98 
a Titanic and phosphoric oxides not separated. 
No carbonates present. Sulphides undetermined. 
