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CONTENTS.  f 
NUMBER XXVI. 
Art. XVII. On the Phantascope; by Prof. J. Locxz, - - 153 
XVIII. The condition of Trap dikes in New Hampshire an evi- 
dence and measure of Erosion ; ; by Professor Oxiver P. 
Hvussarp, M.D., - - 158 
XIX. Conssiieationis to the Myéotory of North Riser by Rev. 
M. J. Berkexey, of inate and Rev. M. A. Conais, of 
South Carolina, - 171 
XX. Connection between the Ramis inti ii dhe aa 
and chemical properties of Barium, Strontium, Calcium and 
Magnesium, and some of their Snail by Professor 
E. N. Horsrorp, 176 
XXI. On the American Prine: Meridtiid ey Prof J. a 184 
XXII. On Perfect Musical Intonation, ee the fundamental Laws 
of Music on which it depends ; with remarks showing the 
aia of attaining this Perfect Intonation in the Or- 
gan; by Henry Warp Poote, - - 199 
XXIII. On the new American Mineral, Linseuiee - "a Pro- 
fessor B. Situiman, Jr., - - - - - - 216 
XXIV. Table of Atomic Weights, - - a ee 
V. On the Isomorphism and Atomic ae of some Bs 
erals; by James D. Dana, - 220 
XXVI. Observations on the Size of the ‘Brain i in various are 
and Families of Man; by Samvet Georce Morton, M.D., 246 
XXVII. Remarks on the Aneroid Barometer ; by Professor 
J. Lovertne of Harvard University, - 249 
XXVIII. An account of some Fossil Bones found in asada in 
making excavations for the Rutland and rer a Rail- 
road; by Zapock THompson, 256 
XXIX. idan of a Meteorological hosts ‘Negr at Mariette 
Ohio, for the year 1849, by S.P. Hitpretn, M.D., - 264 
. Chemical Examinations of the Waters of some Pie Min- - 
eral Springs of Canada, by T.S. Hunt, - - - + 266 
SCIENTIFIC INTELLIGENCE. 
Chemistry and Physics. ipa upon some derivatives of the Benzoic sonic 
by G. Cuancen, 275.—On the Products of the dry distillation of Benzoate of 
Lime, by G. Cusieoas. ys .—On the Action of Nitric Acid apon Butyrone 
Laurent and Cuancei: On Sulphuretted Benzamid, by A A. Ca AHOUR n 
the Composition of Chloropicrine, by A. Canours, 278.—Process for the use 
of Tin Plate Scrap in the Manufacture of Malleable Iron, by Ev. Scuuncx: 
Anisole, Salicylic Ether, and substances derived from them, by A. Canours, 
the Compound Ammonias, by Apotpue Wurtz, 231.—On a Cop- 
