The West American Scientist. 
The standard unit of weight might with advantage, be one 
which would be more easily within the reach of the unscientific 
than it is now, A certain quantity of pure water weighed — in 
the air, at normal and easily obtained temperature, with 
barometric pressure, and given correction for locality, would pel 
haps be more serviceable, for read y verification, and correction of 
weights, than the metric volume of water, at a temperature close 
upon freezing, and experimented with in that physical state, so 
difficult of production—the entire exclusion from the atmosphere. 
CATALOG OF FOSSILS IN THE ORCUTT COLLECTIO 
1 Ostraea lurida Cpr = 5 
2 Tellina Gouldii Hanl, 1 valve. 
bs gee 
3 Mactra————? 
4 Liveardium elatum Sby? Fr 
5 Chione simillima Sby. 
6 Lucina nuttallii Conr. 12 5 
? Janira. ? 5 Fragmen 
8 Pecten——— af 
2 
Nos. 1—8 were collected by C. R. Orcutt, Nov. 2 
from a stratum one or more feet thick, five feet below Pe ai face, 
exposed by ‘he grading of the street at the cage: corner — rf ¢ 
and thirteenth streets, San Diego, Californi ie 
Nos. 9-15 were collected at Burlington, lowa, ig 
ro Sr., and received i ” exchange. 
9 Spe ia criuus.” 
10 Teliform 
| All names as cae dink no means of correcting errors. 
11 Ammonite. 
12 Strocotimus, 
13 Platicrinus, 
14 Pentiemite. 5 
15 Crmoids. 18 
16 Helix bermudensis, Bermuda—from D. W. Ferguson 
17 Cidaris, Holy Land, from Hon. E. M. Goodwi 
18 Spirifer oweni Hall. Upper Devonian, Watson station, 
from W. Re catia pene 1887. 
