CONTENTS. var 
NUMBER XXXII. 
Art. XVI. On the Velocity of the poe Current in Telegraph 
Wires; by B. A. Goutp, Jr., in a Report to Prof. A. D. 
Bacue, LL.D., Superintendent an U.S. Coast Survey, 153 
XVII. Observations on the Gnathodon beds around the head 
Mobile Bay ; by Rev. C. 8S. Hate, - - 164 
XVIII. On the Mineral Springs of Canada ; by’ cs S. Hunt, - 174 
XIX. Whirlwinds produced by the Burning of a Cane- — by 
Avexanper FisHer Otmstep, A.M.—With a Pla 181 
XX. Description of a new Graptolite found in the cede Silu- 
rian Rocks near the Falls of St. Croix pines by HA 
Provt, M.D., 187 
XXI. On the direction of ‘hes Spark fiom Benantlary Correnta 
under the influence of Helices or Magnets ; by Professor 
Has. G. Pace, M.D., 191 
: as tis the Conduction and Discibuiien of the Galeanne Can ae 
cs nt in Liquids; by Prof. Cuas. G. Pace, M.D. 192 
pF XXIII. Two Problems by Bapu Deva Shastri, Native Priféalot 
of Mathematics in the Benares College, 194 
“a XXIV. On the Vents of Hot Vapor in Tuscany, acid heie Dale 
‘ _ tions to Ancient Lines a, Fone and Erupiion by Sir 
f Roperick Impey Murcu 199 
: pal On Kirk wood’s Law of che rotation of the Primary Planeies ee 
y Prof. Exriss Loomis, 2 
XxVC. On a new Genus oe ee in the Collections of the 
ae S. Exploring geen pe Capt. oe Wilk iN. 
vy James D. Dan - : - ‘ . 
XXVIL Mineralogical Nefics - - - - - 
Bs MA VIL Notices of Coal in Chia by D. J. Maccowan, M.D., 
{ XXIX. Abstract of a Meteorological Journal kept at Mare 
Ohio, for the year 1850; by ;S. P. Hivprern, M.D., 
n the different Chamnica’ Conditions of the Water wk the 
Acer of i ines and at the oe on Souneiyeys : y 
Gc. A. Hay 
XXXL “Oh the Limit of Perpetual ibew in the Himalaya by 
Lieut. StracHe : 
* * . XXXIL acs of “the Ashes of one Commercial Teas 
' communicated by Prof. E. N. Horsr 
SCIENTIFIC INTELLIGENCE. . é 
it s 
Re "of Gases: 
van ‘ee 22 ons 
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