L 
é 
CONTENTS. 7 
NUMBER CXXIII. 
Page 
Art, XX.—Phosphorograph of a Solar Spectrum; by J. W. 
DRAPGH, | A es ee ee eee ee 171 
XXI. a Bivuirare and “gto of Huphoberia of Meek aaa 
Worthen; by S. H. Scu ee phe 
XXII. The Actinic Biglaner by Sy P LANOGLET 6 ro 18 
XXIII.—Recent American Earthquakes; by C. G. Rock woop, 198 
XXIV ao Carbon dioxide in Smoky Quartz; by G. W 
cee ose : 2 
XXV. SeGaioins ‘Substances contained in the ‘Smoky Quartz 
b 
of Branchville, Conn.; by A. W. Wriear,....-.------- 209 
VI.— Origin of new points in the topography of North 
Carolina; by W. C. Kiwi ee 216 
XXVII.—Oceurrence of Realgar and Orpiment in Utah Ter- 
Witory; by W. PY Brake,’ .- oo Teco coe eee 219 
XXVIII. —On ae solubility of Chloride of Silver in Water; 
Bose See Vo oes Oe ee a a ee ee 220 
SCIENTIFIC INTELLIGENCE. 
piper and Physics. aprons. see Todine bike eis a and MEIER, 222.—Re- 
and CHA calc a 3.—Chlor-hyponitric acid 
of ( Gay Lussace, Goupsenatryt Mer reuric | Dales and its Dee on, 
BERTHELOT and VIET bp, 24M t production er Chiorofetan nd d Bromo- 
form, DAMOISEAU: Tdentity of eatin with Lactose aebage: 4 Absorption of 
dark Heat rays by Gases and Vapors, LECHER and PERN R, 236.—Dust, Fogs, 
and Clouds, ArrKEn, 237.—Re eg between the Diagnal: Ranks of the Magnetic 
Declination and Horizontal fore LLIS, . 8. Coast and Geodetic inhi, 
240.—Magnetic Teclnaktin ‘in Missouri, 241, 
and Miner ogy.—Penns lvania Gactonieal Survey, C. A. As tee hag 
wee ae of pie e ea ng Surv rie of Canada, for 1878-79, a RC C. 
grap 
logy. —Power of Movement in Plants, C. Darwin, 245. 
eng Zool —Eucalypto- — 
praphis, Ieee Atlas of the oe of Australia ‘i08 the adjoining 
8 —Flc 
ands, F. vy. MULLE ora 0 an fe OBINSON: 
of California, 8. Watson: Giant Sania tarchitent is), a,  E VERRILL, 251. 
Scientific Ppa crot 2B ary te fur Instrumentenkunde: Organ 
Miscellaneous 
Mitthellonces aus dem gesammten Gebiete der demas aad mt pe Cechni 
Academy 0: ny Paris, mL JOULD: Bib re ie Géné rated stron- 
omie, a ©. Houzeau and A, LAN NCASTER, 253.—Washburn Obse tees 
sity of Wisconsin: A Text Book of ocsioconn Milochanice for ws yo of Col. 
leges and Schools, E. 8. Dana: Massachusetts Institute of Technology, 254. 
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