CONTENTS. Vii 
NUMBER CXXIX. 
Art. ae On certain recent contributions 0 ee a 
H. A. Newton, 285 
ee Observations upon the Drift Phanemei of Southwastea 
Iowa; by C. A. Wuire, M.D., : 301 
XXXIII. On the General Metallurgical oe of que Whelpey 
and Storer; by T. Sterry Hunt, - - 305 
XXXIV. The vp oti Portable Vertical Circle ; si Cunveialts 
Ags 309 
XXXV. ee it faceten of Meteoroogoal ieee es e 
Erastus L. DeForest, - 316 
XXXVI. Researches on Solar Physits : " Wanren ‘De LA Ros, 
Batrour Stewart, and Bensamin Loewy, 2 
XXXVII. ese” on the Ethers of Silicic Acid ; by C. FRigDEL 
and J. M. Cra 331 
XXXVIII. On the gl falsification of samples of California 
Petroleum; by 8. F. Pecxnam, 345 
XXXIX. Contributions from the Sheffield eaneiuiey of Yale 
College.—XIV. On Kaolinite and Pholerite ; es Ss. 
Jounson and Joun M. Brake, : - 351 
XL. Partzite, a new mineral; by ALBERT * hsdirs : 362 
XLI. On Contributions to resin sere x the Smith- 
sonian Institution, - 363 
XLII. On the genus Piancnonlie: 3; by ae Gaze «870 
XLIII. On the action of water upon “ ae. at an ele- 
vated temperature ; by O. Lozw,  - - 371 
XLIV. Exploration of Kent’s Cavern, télenskice, . 372 
XLV. Additional Notice of the Cohahuila Meteoric aes : 
Cuartes UpHam SHEPARD,~— - - 
SCIENTIFIC: INTELLIGENCE. 
Chemistry and Physics —On the conversion of dynamical into electrical force without the 
aid of permanent magnetism: New applications of methods of reduction in organie 
—_— BURTHELOT, 386.—On the e monatomic za : On igetanapraiir, 2" 
ibis GAL, 388.—On ¢ On the poly- 
f acetylene, BertHEeLoT: New method for the preparation of oxygen, 389.— 
Apparatus for detecting ‘Ghraces of density in transparent media, Dr. oo eagrs 
