* 
Ls 
CONTENTS. 
Page 
Arr. I—Suspension and Badinentation of Clays; by Wm. 1 
Oe OREM BE SSO in ee oat ee ee 
II.—Method of illustrating its formation of Diffraction 
Pee Oe yt. MOURBEAND ccs ol coogi ok AL 5 
Til. —Systern of sii dorating ie Geological Diagrams; by 
WA SRN Oo ea ee 7 
¥ cotesaliine Tacks of the Seottish Highlands; by. 
Fm iebiera i PR TS ca ares Dre a Ug pO 10 
V.—Great Fault, Schodack Landing 
g, N. Y.; by S. W. Forp, 16 
vi sien of Mild Polar Climates ; ; by James CROLL, ----- 20 
VIL._—The Amount and Rate of Chemical Erosion in the Lime- 
one of Center Co., Pal; by A. L. Ewrne,---..--- 29 
VIL. en ae from Shipton, Canada ; by E. G. SMITH,.. 32 
IX.—Santa Catharina Meteorite; by O. os TIRRRY ooo. 33 
X.—Gravels of Southern Delaware ; by F. D. Curs TER, -- . 36 
.—Report of Superintendent t of U.S. Coast Sur vey, 1883, 44 
XII.—Combinations of Silver Chloride, Bromide and Todide 
with Coloring Matters; by M. Carry Lea,-- 53 
4 —Present by of our ‘knowledge ‘of Refraction Equiva- 
ents; b a> APEADGIGR Ro eee a 55 
XIV sora s Quartzyte, Psendo- breccia; by J.D. Dana, 57 
SCIENTIFIC INTELLIGENCE 
Chemistry and Physics —Viscosity of gases, - ScuuMANN: Distribution of elec- 
trie lighting over great distances, 59.—Heat and “Blectr city: Thermo- = oe 
rie ene of amalgams, eT gg ea Text ho . Phy sics, W. A. ANT 
an 
fs Lite 
Geology and Mineralogy —Geology of the “Scottish Highlands, 6 62.—Chart of the 
ancient drift and glaciers of Switzerland, A. Favre, 65,.—Ge steal Sections 
crossing N. Hampshire and Vermont, C. H. Hircnoocr: ° Till-ri ridge of Ne 
and Natural History Survey of Minn nesota, N. H. WINCHELL: Geological Survey 
of Ohio, E. OrToN, 68.—Contributions to the Tertiary Geology of the U.S. A 
Hepes: Report PPP of Geological Survey of Pasayivatin C. E. Breecuer: 
Hinp i 
Co 
Minerals, O. A. Dersy, 70.—Spodumene erystals, W. P, Buaxe, 71.—Mimerals 
from a grit = Senne Mineralogica, A. Wr1spacu, 72. 
Botany ~ Zoology. —Anatomy of the Phake sclene and Ferns, A. DeBary, 72. 
—Livi dees sas at high altitudes, M. EK. pp Freopericu, 73.—An impreg- 
is of Eehi i 
row. 1 - ink, 
Zone Catalog f the pam Observatory: International Goutabente at 
Washington, Osidber: 1884, 7 
Miscellaneous Scena Intec Aig tremens open pi Observa 7 
fe peo Phenomen $83, 80.—Annual fog eport of — Burean of "Rails 
—New England Meteora Society y, 82.—American Society for -Psychical 
tial American Pearls : moe durch dua Bei ch der Sterne, W- 
MryeER, 83.—Elisha Mitchell Sonne Society : er Hours onsen ‘the 
oes via A, C. Hamu, $4, Obituary. —Hermant Kolbe, 8 
