VI CONTENTS. 



Page 



XII. The Analysis of Cupric Bromide, and the Atomic Weight of 



Copper. By Theodore William Richards . . . 195 



XIII. On Cupric Oxyhromide. By Theodore William Rich- 



ards 215 



XIV. On the Composition of certain Petroleum Oils, and of Re- 



fining Residues. By Charles F. Mabery .... 218 



I. The Sulphur Compounds in Ohio Petroleum. By 



Charles F. Mabery and Albert W. Smith . 219 



XV. A New Meteoric Iron from Stutsman County, North Dakota. 



By Oliver Whipple Huntington, Ph. D 229 



XVI. On the Infuence of the Strength of the Magnet in a Magneta 

 Telephone Receiver. By Charles R. Cross and 

 Harry E. Hayes 233 



XVn. On the Comparison of some Electrical Condensers. By 



Charles Nutt 244 



XVin. Note on the Pressure Coefficient of the Voltaic Cell. By 



Carl Barus 259 



XIX. Supplementary Note on North American Laboulbeniacece. 



By Roland Thaxter 261 



XX. On Change of Form affecting a Magnetic Field. By A. 



Emerson Dolbear 271 



XXI, Preliminary Notice on Budding in Bryozoa. By C. B. Dav- 

 enport 278 



XXII. On Chlorsulphopyromucic Acids. By Henry B. Hill and 



Walter S. Hendrixson 283 



Proceedings 297 



Memoirs : — 



William Parsons Atkinson 309 



Charles Deane 310 



John Huntington Crane Coffin 312 



