96  H. A. Chase—Indian Mounds on the Coast of Oregon. 
fibrous, with evidence of incipient ee translucent ; 
detsbly refracting. An analysis gave 
Oxygen ratio 
SiO 55°12 29.396 : 
ALO, 0°35 0-256 t ace 
FeO 8:20 1822 } 
MnO 0°33 0-074 
CaO 0°75 0°214 | 
MgO 31°18 12°472 15°152 
K,O 101 0°170 
Na,O 155 0°400 
H,O 2°21 2-044 
100°90 
It is, oa a somewhat altered and hydrated bisilicate of 
lime and iron of the general formals (Mg, Fe) Si, In other vari- 
eties of this opineral whic ommon unfortunately goes by 
the name “ anthophyllite, : a departure from the normal 
composition is still wider 
VIL. Wernerite from Van Arsdale’s Quarry, Bucks Co., Pa. 
Occurs interpenetrated with sphene, eryst. map pyroxene 
and oligoclase. H.=5%5. G.=2°708. Lus white, 
but with faint greenish tinge eet ads impure very 
pentk oa structure columnar massive. Composition: SiO. 
47-47, Al,O, 27°51, Fe.03 trace, MgO 1:20, CaO 17-59, Na,O 3°05, K,0 1-40, 
H,0148= 9970. Oxygen ratio for 8, 21 and Si = 653: 12°82: 25-316 
=1:197:3'88. This ratio is unusually near the mean oxygen 
ratio of the least altered varieties of wernerite, and there 
appears no good reason for giving to this variety ‘of scapolite 
from Van Sa Quarry, as has usually been done, the name 
of ekebergi 
Stevens oie April 7th, 1873. 
isc 
Art. VL—ZJndian Mounds and relics on the Coast of Oregon; 
by #_A_CHASE. 
THE Indian tribes that ‘once eee the coast line of - 
The reasons for this i al ii are to be foal, not only in 
the usual destiny of the aborigine to fade away when brought 
into contact with the strong civilization and also the strong 
vices of the white—but war, both between different tribes, an¢ 
