CONTENTS. : vil 
NUMBER CxXCVIL. 
Page. 
Art, XXXVI.—Red and Purple Chloride, Bromide and 
Todide of Silver by ML Carmina 212 ee eres 349 
XXX VII.—Inter-relation of Contemporaneous Fossil Faunas 
and pMlorasay Ope Als VV UENO cata 2 elope nlc pean ce G4 
XXX VIII. Meee nal Rock of Manhattan Island ; bs 1 Daw exe 
(CUB YAUIUA GIADA eee ce Cem enntlya te Nei SURGE Si Re LANE opt TY OU anu re A. 
XX XIX.—Terminal Moraines in Maine; by Gro. H. Stone 378 
XL.—Note on the enlargement of Hornblendes and Augites 
in Fragmental and Eruptive Rocks; by C. R. Van Hise 385 
XLI.—Great Acadian Paradoxides; by G. F. MarrHew._-. 388 
XLI.—Kin of Paradoxides (Olenellus ?) Kjerulfi; by G. F. 
HVT RSET We pte iy cnet te OU ere ASYM AOS CRE URC A ARE: 390 
XLIIL—Taconic Rocks and Stratigraphy, with a Geological 
Map of the Taconic Region (Plate XI); by J. D. Dana 393 
SCIENTIFIC INTELLIGENCE. 
Chemistry and Physics.—Generation of Chlorine gas in Kipp’s apparatus, 
WINKLER: Action of Kaolin on the alkali-chlorides, GorRGEU, 419.—Distribution 
in the soil of the nitrifying organisms, WARINGTON, 420.—Absorption of Gases 
by Carbon, BAKER: Valence of Bismuth, MICHAELIS, 421.—Action of Phos- 
phorie chloride on Ethyl acetondicarbonate, BuRTON and VON PECHMANN: 
Behavior of Iron and Steel under the operation of feeble magnetic forces, 
RAYLEIGH: Movements of the Wings of Birds, represented according to three 
‘dimensional space, MAREY, 422.—Magnetic effect of Harthquakes: Heat of the 
Sun, FrouIcH, 423. 
Geology and Natural History.—Bulletin of the American Museum of Natural 
History, New York: Brief notices of some recently described minerals, 423.— 
Materialen zur Mineralogie Russlands, N. von KoKscHarow, 424.—Relation of 
Schorlomite to Garnet, KOnrG, 425. 
Botany.—Botanical Notes, 425,—Outlines of Classification and Special Morphology 
of Plants, 427. 
Astronomy.—The Astronomical Journal: Comets in 1886, 428.—Comets in 1887: 
Henry Draper Memorial, PickERING: U.S. Coast and Geodetic Survey, 429. 
Miscellaneous Scientific Intelligence.—Die Hochseen der Ostalpen, A. BOuM, 431.— 
American Association: Agriculture in some of its relations with Chemistry: 
National Academy of Sciences, 432. 
ERRATUM. 
Vol. xxxiii, p. 291, in foot-note, Jahrb. Berg-Hiitt., for “1877” read ‘1887,” 
