from the Poles of a Magnet ; preceded by an account of some Experiments on Mole- 
cular Influences, by Joun Tynp4iu, Ph.D, F.R.S., 114.—Further Experimet. is 8 
Remarks-on the Measurement of Hem 24 the gic Point of Water, by. Profes 
J. D: For 
Mineralogy and Grolegy.—Herrerite idensfead with Siithonie, by Dr. F. A. Genrn, 118. 
lyses fi 
BES, 11 
y Ca 
RACHEY, F.R.S., F.G.S., 12].—Eruption of Vesuyins, 125.—Notice of recent publi- 
29. 
Botany and Zovology.—Poetry of the Vegetable World, by M. J..ScuiEeipen M_D., edited 
by ALpHonso Woop, M.A., 129—De Vriese and Harting, Monographie die Marat- 
tiacées: Pritzel ; logue Botanicarum Index Locopletissinas: ing of the Southern 
States, by Prof. Joun Darsy, A.M., 131—Wheat from Agilops, 134.—Botanical Ne- 
crology and mien ® pr of a New genus of Cueto by Lunsrorp P. 
ey 195. 
y—~Elements of Dien’s Comet : gan Planets: New Comet, 137.—€ause of the 
eateitad Light, by Rev. Geurcs Jones, 
Miscellaneous Intelligence.—Contrib Meteorol Cc M.D., 
139.—Microscopes of American Manufacture, 142. —Melloni: On the Application of 
Photography to = ae Observations, by Sir Joun F. W. Herscnen, 143.—Pres- 
ervation of Insects: Geological Survey of Great Britain: American Association for the 
Advancement of cies: 144.—Anesthesis, 145 —Obituary —Sir Henry Thomas de la 
Beche, 145; G. B. Greenough, 147-—A Treatise on the Differential and ea Cal- 
culns, and on the gen of aru by Epwp. H. Courtenay, ctical 
- Meteorology, by Jonn Drew, Ph.D., F.R.A.S., 148.—Report on the Agree lire and 
eology of rae by B. L. ILEs: -C ential to the Natural History of the 
United States, by Lovis Acassiz, 149. —Report on Crustacea, by Jamzs D. Dana: No- 
tices of new publications, 151, 152. 
