CONTENTS. Vv 
schecassecee LXXXVIL. 
xL— 
‘ture ; Phys eory of Cote, by . Norton,.- 161 
XXU.—Transmission of Earth Waves; by H. L. Apso A eR 
XXIII. Sec oreamey of Chemical Notation ; by Brrtuexor and 
NEARIGNACE 2 20 ee ae eo ae eee 184 
epee —Renction of Silver Chloride and Bromide; by M. C. 
pec teate ss 189 
XXV. ot ournal Friction at Low Speeds; y A. S. Kiwparn, 192 
XXVI.—Brightness of the Satellites of Uranu iit bomsel bah 5 
XX VIL—Decomposition of Chromic Iron; by E. F. Smrrn,. 198 
IL. B. Wison,- 
XXIX.—Tantalite from Coosa Co., Alabama; by J. L. Smrru, 203 
XXX.—Am sug ines Silver Nitrate; by W. G. Mrxrer,_ 205 
XXXI—C lization of Variscite ; by = = CHESTER,... 207 
XXXII.—A Ney Planet ; by C. H. F. 208 
XXXIIL—New Dinosaurian Reptiles ; sie "0. ro Marsu,.--. 241 
SCIENTIFIC INTELLIGENCE. 
og wrant J and Physics.—New mode of determining Vapor Densities, ve ndecoes NN, 
—New Oxide of Sulphur, Peteatphatis — BERTHELOT, 209.—Formation 
fs ‘Ammonium Nitrite in Combustion, ZOLLER and GRETE: Fiuoranthrene, a 
r TT ; 
ratory of the Johns Hopkins University, 2 
Geology and Mineralogy. —W isconsin ae Socioers Geological Survey of New 
Jersey, 216.—United States Geological and Geograpl hical Survey, sacle .—Geo 
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Boers 
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gees 
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ernary beds of Grinn A 
Leda Clay ee pe or beds) of a Ottawa valley: Mineralogy and Petrography 
a an DSWORTH: " Setunrekite from Mitchell Co., North 
as ate ils i slaeelasters Note to the Review of Darwin’s “ Forms 
Flo 221.—Historia Filicum, 222. i F 
wers,” ria Filicum, 222 Pires of North America: List woth! 
found in the vicinity of Boston, 223.—Journal of the ean Society: Guide du 
Botaniste in Belgique: Insect-fertilization in , 224.—Botanical Ne- 
crology of 1877 aoa et ogoniese, 225 Cg new Species ime 
from rican wa Dr. Warring’s a on the 
growth-rings of eee plants a proof of siorublanis seasons, 
Astronomy. oe of the Sun, J. Crobu, 226- ee By the Cordoba Obser- 
_ vatory, B een 230.—-Moon’s Zodiaca | Light, E. S. Houpen, 231. 
Miscellaneous Scientific Intelligence —Address of the President of the Royal Society, 
231. cetaniatbone weld Flasks Pye on the Alps, ota Dog as of Tight 
upon Bacteria and beara Or vEs and T 
ditures for Universities in Germany, cot —Earthqake of of Nov. “tb. 187% 238.— 
Geological — of repaect: Palzeon teer Weat er Service . 
Beiblatter n Annalen der Physik und oat pone 
Obituary. iste César Becquerel, 239.—Henri Victor Regnault, 240. 
