iv CONTENTS. 
So Ree - Report to the Solar gi ies ieaniigoe ete., B. Stew- 
AR 76,—Astronomical Obse s at Duns ink, 78.—~ 
cas ‘Caen af the Argentine Observatory : nteraatiotal Conference at 
Washington, October 
po mreeecay Scientific nati ence— Systematic Earthquake ve eae ae 
Voleanic Phenomena of 1883, 80. nual Report of the Bureau of Ethnol 
g1—_Ne ew England Meteorological § Society, 82.— American Societ; ty for Psyedica 
ieckagee American Pearls: Spazierga ron “pg das Reich der Stern 
EYER, —Elisha Mitchell Scientifie Soc Leisure Hours enue ae 
Gems, A *S HamMuln, 84. Obituary. chorea Kolbe, 84 
NUMBER CLXX. 
Page 
AEE OAM AN iorg se te ceed nee oS wl ae 85 
Art. X VI.—The Organization and Plan of the Aas States 
Geolo ogical Survey; by J. W. Powerit. With PlateI_. 93 
XVII—Memorial of George Bentham ; iy Asa Gray...-.. 103 
XVIII.—Paleontologic Notes; by C. D. Waisorr 23.2525 114 
IX.—Rotation of ‘the E uipotential ae of an Electric 
Current by Magnetic Action; by E. E, Har 
XX. Peano of the term Esker or Kim Drift; by J. H. Kiv- 
135 
XXL. = Baass of Mild Polar Climates; by Jamus Croti_..- 138 
XXIT.—Notice of the remarkable Marin Fauna occupying 
the outer Laat < the Southern Coast of New England; 
Dy AL TL Vee oo oo a ee 149 
XXILI.—Note on a a Fossil Coal Plant found at the Graphite 
ol a in Mica schist, at Worcester, Mass.; by ci A. 
PERR 
XXIV. V.The Test Well in the Carboniferous Formation at 
Brownvilie, Nob.; by i Ee Eicke oc 159 
XXV. —Review of Hill’s Supplement to Delaunay; by J. N. 
Sto ELL 
SCIENTIFIC INTELLIGENCE. 
Chemistry and Physics.—Relation between the Velocity of Hivaporation - aes 
and their dear rah ero ScHALL, 163.—Quantitative o 
Metals bh Klectrolysis, CLASSEN, 164. Specific gravity of Bie dernier Sul- 
phuri JEFF: Octosulphates, Wxzper, 165.— Separation of 
Arsenic on Tin and Antimony, Hurscumipt: Purification of Arsenifer- 
ous Zine, L’HOre: Perseite, a new sugar, Munrz and Marcano: Synthesis of 2 
Coloring matter resembling that of Litmus, TRaus and Hock, 166.—Use of 
Induction Spark in Spectrum Analysis, Demargay: Effect of the Prides 
eld upon Light, Cornu: new Galvanometer, J, RosenTHaL, 167.— 
Electrical resistance of microphone contacts ee movement, BoEKMAN: 
Resistance of the Siemens Mercury Unit, Wimp, 16 
Geology “ Raat History.—Scorpion from the Une. aeicg 168. -—-Dinoee- 
rata, a Monograph of an extinct sod f gigant 0. C. MA 
Names i; extinct reptiles, 0. C. Marsu: Botanical Tics Pt 1884, 169. 
Miscellaneous Scientific peP Pues late Henry Watts, B.R.S., F.C.S., 172. 
