— ee LUC 
CONTENTS. v 
NUMBER CXIX. 
Page. 
Art. XV. Friedrich Georg Wilhelm Struve, - - - - 145 
XVI. Experiments with the Ammonium pe = CHARLES 
M. Werueritt, Ph.D., M.D., - . 
XVII. — and ares ocioaton e See aes 
CuasE, 
XVIII. Waterglase by co M. Oiewiy: Pat t v, . - 173 
XIX. Speculations upon a possible method of determining the dis- 
tance of certain variably colored Stars ; by JosepH Wuarton, 190 
XX. Contributions to the secant of Natural ten oo Tr 
STERRY Honz, « : - 193 
XXI. A new Meteorite from oo county, Parner contain- 
ing on its surface Carbonate of Lime; = Prof. J. Law- 
RENCE SMITH, 13 
XXII. Researches on . Volatile Hydrocarbons My C M. 
WaRREN, - - - 216 
XXIII. Barometer ; by J JAMES ae - 233 
XXIV. On a new Illuminator for Opaque otjeeti Sind high 
powers of the Microscope; by H. L. Sirs, - 
nous On a new Growing Slide for the aie cha : oy H. L. 
sa Oe i Picmsics of ce Speci of the Aisiite: ; jy Prof 
Jostan P. Cooke, Jr. - - - 243 
XXVII. On the use of the Bisulphate of Soda « asa SNe for 
the Bisulphate of Potash in the decomposition of minerals, 
especially the Aluminous minerals; by Prof. J. Lawrence 
SMITH, - - - - - - ee < 
XXVIII. Altitudes of Shooting Stars observed on the night of 
_ Noy. 13-14th, 1863, at Washington, Haverford College, 
_ Germantown, ait and other apes Computed by 
iH. A.Newron, - 2 ns : 
XXIX. Remarks on Gavia. an its “ pelilian toa —— 
Universal Force ; by Henry F. — - 
