CONTENTS OF VOLUME XXIUL. 
s NUMBER CXXVII. 
rs ary 3. Bete Kn to Meteorology; by Ex1as Loomis, 
With Piste do ee 
II. ieee tes as an element of danger in Mining; by H. C. 
Ill. Notes on 1 Mineral Localities in North Carolina ; “by W. 
IV, Vatietion in Length of a Zine Bar at the same Temper- 
ature ; jis AOMENOUM ce poke Vhs wc ee gue sna 
V.—Restoration of Dinoveras mirabile; by O. C. Marsu, 
With Plate IT, . - GR ae ee ee zn 
ne ee or Kerosene Shale” of New South Wales; 
OV Biv emer oe ee oe ee 
VIL. — Meteorological Researches, Part Il. Cyclones, Torna- 
and Watersponts ; by W. Fania, 2. vied 
VIIL. —Mageti Observations made ae Davis peg in 
August and September, 1880; by O. T. SHerMAn, - ---- 
IX.—Cr vetalline form of Sipylite; by J. W. wat ee 
.—Observations on the Structure of Dink voph sider ‘and its 
affinities with certain Sponges; by R. HITFIELD, -. 53 
XT. BPH aha ta Rocks of Southeast Kansas; by G. C, 
Bro ee 
XIL lee Tertiary ‘of the ( Gulf of Mexico; by E.W. Hirearp. 
With a map (Fiste IIT), 0 2 ew oe ene oe 
XIII. ste te Face fhe sg County, Va.; by J. L: 
Se ee ae 
XIV. ct eeqdols of New y Mexico; by B. SILLIMAN, . eee 
SCIENTIFIC INTELLIGENCE, 
Chemistry and Physics. —Free Fluorine in Fluor Spar, Lonw: Arsenobenzene, 
MICHAELIS and ta 71.—Transformation of Dextrose into Dextrine, 
Muscunus and Meyer, 72 LS Pemisthinaie Acid, Lewes: Photographies, EL. 
WILSson, 73 Sects of i hl . LippMANN: Inverse Electromo- 
tive force of the Voltaic are, 74.—Ste Photo graphy, H. DRAPER: Weather 
arnings, B, Stewart: Storing of Electricity, ’ iL Faun 
