iv ae CONTENTS. 
- 
state ; Ozone, 108.—Attempts to insulate Fluorine : Alu- ‘Py ta 
minium, Silicium, &c. &c.:.Spongy Metals, 109.—Paris Sy ‘a 
Universal Exhibition, 110.—Photography ; Employmetit of é 
the Cyanid of Iodine: Artificial Alcohol, 111.—Changes in 
the scientific corps at Paris: Bibliography, 112. 
* SCIENTIFIC INTELLIGENCE. 
“ 
Physics.—On the Expansion = certain substances by Cold, W. J. Macauvorn Ran- 
KINE, F.R.SS., etc., 113—On the Nature of the Force by deh eee are repelled 
from ‘the Poles of a uk preceded by an account of some Experiments on Mole- 
cular Influences, by Joun Tynpaut, Ph.D., F.R.S., 114.—Further Rigemas pe 2 
Remarks on = Measurement of "Heights by the Boiling Point of Water, by Professor 
J. D. Forses 
erasiedd and G vidoes —Herrerite identical with enc by Dr. F. A. GenTH, 118, 
—Analyses of the Meteoric Iron fro ezon, P. 
mM 
° 
3 
Ss 
3° 
3 
@o 
«. 
ix} 
So 
Low 
4+ 
cations, 
Botany and 206 sin —Poetry ~ - oe World, by M. J. Scuteien, M.D., edited 
by ALrHonso Woop, M.A., 129.—De Vriese and Harting; Monographie des insrnigll ie 
Suis by Prof. Joun Danny, A.M., 131—Wheat from A®gilops, 134.—Botanical Ne- 
logy and Intelligence : Beacziption of a New genus of Crinvidea by LuxsrorD ss Ee 
YanvDELL, M.D., 135.— 2 
omy.—Elements of Dien’s Comet: ere Planets: New Comet, 137.—Cause of the 
Partie Light, by Rey. Grorce Jones, 
Tntoll Fg, OR “tr 
ees ace to soa  atceavety by Sir Jous F. W. ast 
+ Geological Survey of Great Britain: American Association for the 
Advancement pe a. 144. panama 5.—Obituary—Sir Henry Thomas de la 
Beche, 145 ; G.B B. Greenough, 1 
culus, and on the Caleulus of Verligaal by Epwp. BH. Courtenay 
‘ ay, ee 
Meteorology, by Junn Drew, Ph.D., F.R.AS., Rag on the Agriculture and 
Geology of Mississippi, by B. L. Waites: Con tributions to the Natural History of th 
United States, by Louis Acassiz, 149.—Report on oes, by James D. Dana: No- 
tices of new publications, 151, 152. 
NUMBER LIX. 
Page. 
XII. Notice of the Pitch Lake of T rinidad ; ‘ns Mr. N. S. 
Manross. 153 
XIV. On the arses ‘Pornaas Ohio, February 14, 1854; by 
Prof. O. N. Sropparp, - 161 
XV. On the Rerephice! Distribtion of 3 Crstcen mm ine 
- Dana, - 168 
