1V . CONTENTS. 
NUMBER CX. 
P 
Arr. XII_—Contributions to Meteorology; by Er1as Loomis, ‘89 
XIIL. ace A ee of Achromatic ‘Telescopes ; ; by Wm. 
Har dee 
cae —Pinite j in Eastern Massachusetts: ‘its ‘Origin and Geo- 
logical Relations; by W. O. Cross ~-se--- 116 
XV.—Lintonite and other fours of Tiniecke: “by SF. 
cKHAM and C. W. Ha Jc eae: 
MUL Wiemsanta of the leit, Dido; by C. H. F. Perers,.. 130 
XVII. oe of some American Tantalates; by W. J. 
Com 
XVI Method of Ses ‘the’ Reflexion of Sound-Waves, 
1 
y O. N. Ro ; leiadlie kak 
XIX.—Newton’s use of the term Indigo with reference to a 
Color of the Spectrum; by O. N. Roop, -....--------- 135 
XIXbis.—Notice of recent Additions to the Marine Fauna of 
the Eastern Coast of North America; i A. E. a 137 
XX.—The Electric Light; by F. E. Nr 1 
XXI.—The Limbs of Sauranodon; by O. C. ‘Marsa, 
SCIENTIFIC INTELLIGENCE. 
Physics and Chemistry. oe the air Bh hae Equ ay is not hotter in ag Pest 
ee ee = * 
ag Aoi i B, PRESCOTT:  Redep: on Assaying and penne Schemes, 
DE P. Ricketts, 147: Chemical Problem, J. C. en 
Geology and Mineralogy.—A Manual of the Geology of Ii H. a MED 
148.—Note on the Trilobite, Atops Trilineatus of Emmons, S. W. Forp, 152 ~ 
List of Papers on the Tacon oo ich: stem, J. D. Dana, 153 3.—~The Cave of 
erZ: 
bergbau in the oe EB. Reyer: Brachi iopodes, Etudes Locales, J. 
Ba ~: Geological Survey of Japan, B. S. cig Letheea er 
ues Jahrbuch fii 
: Ue 
S Seber i 5 Petotwekie von H. BAUMH 
Botany We hictogy: —The Botanical Gazette, 157 ~Adaiton to the Botanical 
meauhey of 1879: Das Microgonidium, A. "Minxs, 15 —Bulletin of the U. S. 
otter and Geographical Survey of the Tercitoricn, ¥. V. Haypen: Mit- 
aus der cae aeons Station zu Neapel: Bulletin of the Museum 
of Comparative apa, ae . G. Binney: Paleozoic Cockroaches, S. H. SCUDDER: 
sects. ry Beds, A. iy Soupp: DER, 159, 
Astronomy.—Secular te nges in the elements of the orbit of a Satellite, G. H. 
Darwin, 159.—Earthquakes and the Planets, 162—The Problem of the 
Euripus: The American rSseattiem Pores prema remcrr 1882, 163.— 
Aurore, their oe ce fee re ah J. R, CAPRO: 
Miscellaneous Scientific In —U. S. Men sities St vie 164.—The A 
oyages of Nortenakiole. “165 .—Chart of the Magnetic Declination of “the 
United States, J. E. Hmearp: Temperature of the Primordial Ocean, R 
LLET: How icroscope. 8 . 
Microscopical Journal: School of Mines Quarterly: Catalogue of Diatomacex. 
F. HaBirRsHaw. ele me 3 on Fuel, R. Gatnoway: Petroleum, ©. A. 
ASHBURNER, 168, — Obituary.— ALEXANDER SADEBECK, 168. 
