1v CONTENTS. 
XIV. Correspondence of M. Jerome Nicxtis—Obituary; M. 
Brisseau de Mirbel, 103.—Astronomical Refraction: Con- 
stitution of the Sun; Solar Magnetism, 104.—Optics—Man- 
ufacture of Glass for Objectives: Polarization of the At- 
mosphere, &c.: Microscopes for Micrographic demonstra- 
tions, by Nachet, 105.—Aluminium and the Alkaline Met- 
als, 106.—Manufacture of Alcohol: Crystallizations, 107. 
—Introdution into France of a new species of Silkworm : 
Industry, Agriculture, and Productions of Algeria, 108. 
SCTENTIFIC INTELLIGENCE. = 
Chemistry and Physics.—On the infl f the direction of transmi the pass- 
age of radiant hee ean crystals, 110 —On the condensation of gases “by slid bodies, 
and on the heat d gaged in t the = of beaten, 111.—Researches on the Ethers 
112.—On the the amids, 113.—On some new pe telioieie: 
a. of the ctitenelis of i iron on Niconpisin and Nitrobenzin, 114.—Prof. TynpALL 
me Peculiarities of the Magnetic Field, 1 
' 
Mineralogy and Geology.—Analysis of Allophane from the Black oxyd of Copper mines 
of Polk County, Tennessee, by Dr.C. T. Jackson:. On the Boracic Acid Compounds 
of the Tuscan n Lagoo ns, by Emin ena 119:—On the Thickness vel the lee of the 
BES, : 
of the Connecticut Valley and the Coal-bearing rocks of Eastern Virginia and ‘North 
Carolina, by Prof. W. B. Rogers, 123.—Note on an indication of depth of Primeval 
Seas, afforded by th i f color in Fossil Testacea, by Epwarp Forzes, F.R.S., 
126.—Arsenate of Lead ond Vanadats of Lead: Oa the Idenitity of Ripidolite of von 
Kobell with Clinochlore, by N. von Koxscuaroy, 1 
— and Zoology.—Martius Flora Brasiliensis, fase. XII : The non-assimilation of "Nitro. 
by Plants: Lupulin: The Fertilizatio oe Ferns, 128.—Botanical Necrology : 
me) ie Vé i 
Conditions, by J. H. GLapstong, 130—Note on the Mastodon (?), and the Elephas 
primigenius, by Sir Joun pes ti 131.—Remains of the Mammoth and Mastodon 
in California, by W. P. Bhaxe: Discovery of Vivi ws Fish in Louisiana, by B. Dow- 
LER, M. a ng remarks by Prof. ja 133. Olean Animals, 136.—Mollusea 
of Irkuts 
: ....... of Urania: Comet, 1854, 1V : New Planets, 137. 
Miscellaneous i, —On the Means of Realizing the Advantages of the Air-Engine, 
Intelligence 
t Jou Macaquorn oh NE, F.R.S.S., ete., 137.—On Lightning Conduc- 
the Effect pies 399 Piaheoe eben’ sf bdvcoeeas of scngiaces Sub- 
the Weather th hee: fen, Franciscg, California ; by. 
on on At erie pressure ; from A. and H. Schla- i- 
Le F 4 3° e cen 
