1884.] Geology and Paleontology. 285 
Oe ey er a PUN ie vale Cie oe Sk we RES $10,500 
ee a ee EN E AP 6,250 
n R E Seen dyes A nape T oie has hee 1,750 
ROE sie E E EE AE ER Ferne trans We S306 35008 
Résumé of the values of the metallic and non-metallic mineral substances pro- 
duced in the United States for 1882. 
SPE isl pila ea a ies tal a nae RP ae siaed $219,756,004 
Mineral substances named in the foregoing table.......... 226,156,402 
$445,912,406 
Fire-clay, kaolin, potters’ clay, common brick clay, terra- 
cotta, limestone used as flux in copper and lead smelt- 
ing, iron ore used as flux in lea smelting, pyrites 
(for acid making), zinc white made directly from ore, 
marls (other than New Jersey), apatite, gypsum, tin ore, 
bismuth, arsenic, iridosmine, mill-buhrstone and stone 
for making grindstones, lithographic stone, tale (other 
than “ soapstone ”), quartz, feldspar, fluorspar, terra- 
alba, chalk, crude mineral paints, nitrate of soda, car- 
bonate of soda, sulphate of soda, native alum, ozocerite, 
mineral soap, strontia, etc.—certainly not less than.... 8,000,000 
Grand total .......... TET rer re T $45 3.912,406 
The grand total might be considerably reduced by substituting 
the value of the iron ore mined for that of the pig iron made; 
by deducting the discount on silver, and by considering lime, salt 
cement, borax, etc., as manufactures. It will also be remarked, 
that the spot values of copper, lead, zinc and chrome iron ore are 
oe less than their respective values after transportation to 
Market. 
[Abstract from a report entitled “ The Mineral Resources of the United States,” 
Albert Williams, Jr., chief of Division of Mining Statistics and Technology, 
on ae Geological Survey, for the calendar year 1882 and the first six months 
3. 
. o 
Mollusca, by C. A. White. The work is illustrated with thirty- 
two plates. Mr. White notices that five of the types that are 
ognized among the fauna of the Laramie group, Bathyompha- 
lus, Cerithidea, Pyrgulifera, Melanopsis and Melania, have never 
en found among the living fauna of North America, but are 
represented by living species in the old world. The ten species 
of Unio described by Dr. Lea are referred to living species. Pro- 
‘sor Hall believes that the two bivalves, Cypricardites catskill- 
tasis and C. angustata, described by Vanuxem from the Lower 
ak ian, truly belong to Anodonta. These excepted, the ear- 
Unionidæ known are two or three species collected by Pro- 
stra Cope in the valley of Gallinas creek, New Mexico, from 
: Se of Triassic, or perhaps Jurassic age-———M. Petiton (Bull. 
Chi Geol, France, 1883) gives a sketch map of Lower Cochin 
showing the vast recent deposits of the Mekong delta, 
