CONTENTS. vil 
SCIENTIFIC INTELLIGENCE. 
Chemistry an —First Products - the aE ext Benzol, HELBING, 
382, sd fo al of Active Amyl alcohol, LE New method of prepara- 
tion of Salicylic Acid, KoLBn, 383.—Vani lline _ Expansion of Hard Rubber, M. 
i i ts, W. 
385.—Index of reg on . Liquids, MM. Eger vir and TRANNIN, 386.—Elec 
ical Phenomena, P. Dom. Martantnt: Note on the view of Mallet as to the 
Fusion of Metals, by ADOLF ? Soman 387. 
Geology and Natural History—Notes on the Geology of Costa Rica, by W. 
Gags, 388.—Note On the occurrence of Metamorphic Silurian Rocks in North 
Carolina, b F. H. Brapey: Abstract of a paper on the Trap Rocks of the Con- 
i d-Ti 
oirs e Geo 
Habits of some of our Brother-Organisms—Plants, 395.—Linnean 
don, 397 (diene Pickenianskie of Botany at ‘de Jardin des Plantes, 398. 
Astronomy.—On the Spectrum of Coggia’s — t, by Dr. Hueerns: — Tron 
of Iqui fannqne, in Pata, by GustaF Ross, 3 8.—Meteorite of Parkey 
Miscellaneous Scientific Intelligence—American Meteorology, L. bcos GETT, 399.— 
toe of Ceaieal pees oet Table au tee’ reer ains Sedimentaires, par E. RENEVIER, 
—Franz-Joseph Land: Observaciones Feo grr cas y Meteorologicas del Col- 
Hoe de Belen: Table for nage of soc ol, 401.—Tin-bearing country, New 
land, in New South s: Tortoises of Mauritius closely related to those 
the — msin Academy of a Arts, and Letters: Cincinnati Quarterly 
Journal of Tage nce, 404.— Obituary— M. Elie de Beaumont: Dr. Friedrich Hes- 
senberg, 404. , 
NUMBER XLVIIL 
Page 
. XXXV.—Review of von Seebach’s Earthquake of 
March 6th, 1872, in Central Germany; by Ben K. 
MGeRGON. os ds ee +S 405 
—A Jet 
Laboratories ; by Roperr oo eee 
VIL.—On the Molecular Volume of eid of Crys 
tallization; by Frank Wega CLARKE. .... .-- 
VilL—Wa rwickite ; by J. Lawre Dati eee or 
XX XIX.—Curious association of Garnet, iseriea seo Dato- 
lite; by J. Lawrence Satu. ----------------------- 434 
u—On a new method of investigating the fie 
Nature of the Electric Discharge; by ALF M. 
Maver. 
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