CONTENTS. vii 
L.—Composition of the Cymatolite from Goshen, Mass. ; by 
OMEN ccc. na wenieiotemewe geiden ue cit Baty ance 
LL—Relations of the ae of Solutions of Hydrated Tad 
to their Water of Composition; by R. J. Souraworrn,. 399 
LI.—Analysis of the Tetrahedrite from Huallanca, Peru; 
W. J. Comstocx, --.--- 401 
SCIENTIFIC INTELLIGENCE. 
Chemistry and P. nation of Fusing Points, Terre: Chromium, 
Maisgituahe. Soe ‘Nake he 1 Cobalt Amalgams, MOISSAN, 402.—Chromates and 
Dichromate: 3, SCHULERND : Purification of ee BRUAL, 403. Pampers 
aig eerie from the Paraffin of Brown coal, Lippmann and Hawnicz 
form Aromatic Compounds, WropLEvsKy: Phthalein of Orthocresol, 
AUDE, B Strontia, 406.— i f g Elect: 
discharges, WIEDE New current interrupter, F. N LLER 
upter, F. NremMo 
of Molecules, R. RUBLMANN, 407.—American Chemical Journal, 409 
Geology and Natural History. fer ap a See of the Volcanic Tertiary Formations 
of the Yellowstone pee se W. H. Hotmes: Fruit-bearing branch of | 
Cordaites from Cann ig ttc 409.—Woodland Caribou or Reindeer 
from the Loess of Hg EIDY: Annua aN OE of Mi pi ig ar ogical 
Survey, for the year 1878, T. ©. CHAMBE RLIN : and A: tum from 
incenttown, New Jersey, E. GOLDSMITH: Guides os "Sconce Teaching, 410,— 
Function of the Sterile Filament of Pe ntstemon, L&o ERRERA. —Revue 
Mycologique : Meehan’s Native Flowers - Ferns of the U. States, ie _—Obser- 
vations on Seve: realaherieng' of Saprolegniex, F : Popular California Flora, 
or Manual of Donat or Beginners, V. Ra oa Halospheera, eine neue Gattung 
griner Algen aus ps Mittelmeer, Scumrrz, 413.—Dr. W. G. Farlow, 414. 
Miscellaneous Scientific Intelligence—Intra-Mercurial Planet : Geological Society of 
London, 414.—Geological Survey of the Territories of the United States: Gold 
Medal of the Astronomical ety: Academy iences 
£ Comparative port of the Observations of the total 
Solar Eclipse, July 29th, 1878, made at Fort Worth, Texas, L. W. 5 
Obituary.—Frank Howe Bradley, 415: Dove: W. K. Olifford, 416. 
NUMBER CI 
Arr. LIIL—The Forests of Central Nevada, with some re- 
marks on those of adjacent regions; by C. 8. pe 417 
—Ethylidenamine Silver Sulphate ; by W. G. Mrxrsr,. 427 
LV.—Notes on the Satellites of Saturn; by M. Mrrcwett, -. 430 
LVI.—Force of Effective Molecular Action; byW. A. Norton, 433 
LVIL—Dark Lines of Oxygen in the Solar Spectrum on the 
less ia ae side of G; by J. C. Drapmr, .--------- 448 
LVIIL—Genesis of Cinnabar Depos sits; by S. B. Cu HORIGTY» ~* 453 
LIX.— Not aes of Recent Scientific Publications in B 
ci a gpa de on the Geology of the Lower ‘Amazonas; ia 
we ee ee eee 
-- Ser ee ee - 
ek ewe ee ee 468 
North America, No. 5 by A. E. Radin Sie aa 472 
LXIL—New Absolute Gaioaaars by N. D. C. ak 475 
Lx Wang Horses, Recent and Extinct; by 0. C. a 
wee eee 
bees cheb ehe dhe eee eee ee 
