’ 
180 Analysis of Beryl from Goshen, Mass. 
Specimen C.—This is also a chalklike mass, whose precise lo- 
cality is not marked. It is composed chiefly of a minute species 
of Gallionella, mingled with sieve-like discs which at first would 
be referred to the marine genus Coscinodiscus, butsthe entire ab- 
sence of all other marine forms and the presence of several deci- 
dedly fluviatile species, makes me believe that the deposit is @ 
fresh water one, and careful examination of these discs: show that 
they are more nearly allied to the fresh water genus Stephanodis- 
cus than to the marine Coscinodiseus. 
Specimen D.—1s an ash-colored earth, marked as from near 
the Boiling Spring, Pit River. It is chiefly remarkable for con- 
taining a great number of Phytolitharia, or remains of the sili- 
ceous portions of plants, mingled however with numerous minute 
fluviatile Diatoms. 
It is hoped that travellers in California and Oregon will keep @ 
-look out for specimens of light white clay like substances, and 
carefully marking the locality at the time of collection, send them 
to me for microscopic examination. Even a minute portion sent 
by mail will be very acceptable. . 
Arr. XVI.—Analysis of Beryl from Goshen, Massachusetts; 
by Dr. J. W. Maxter. 
inches in diameter, having a very faint tinge of rose color. Sp. gt 
= 2813. It yielded on analysis, 
Silica, . - = - 66:97 
Alumina, - . - - 17-22 
Glucina, - - - = 12°91 
Peroxyd of iron, = - - - 2:03 
Oxyd of manganese, - - trace 
99:13 
which numbers are obviously those of Beryl. 
