THE RUMFORD FUND 



27 



PENROSE, CHARLKS B. Thermo-electric Line of Copper and Nickel 

 below 0, xvii, 47. 1881. 



HOLMAX, SILAS W. Simple Method for Calibrating Thermometers, 

 xvii, 157. 1882. 



PICKERING, EDWARD C. The Wedge Photometer, xvii, 231. 1882. 



TROWBRIDGE, JOHN, and HILL, WALTER N. On the Heat produced 

 in Iron and Steel by Reversals of Magnetization, xviii, 197. 

 1883. 



TROWBRIDGE, JOHN, and PENROSE, CHARLES B. On the Heat pro- 

 duced in Iran and Steel by Reversals of Magnetization, xviii, 

 205. 1883. 



TROWBRIDGE, JOHN, and PENROSE, CHARLES B. Influence of Mag- 

 netism upon Thermal Conductivity, xviii, 210.. 1883. 



TROWBRIDGE, JOHN, and PENROSE, CHARLES B. Papers on Thermo- 

 electricity, No. 1, xviii, 214. 1883. 



SEARLE, ARTHUR. The Zodiacal Light, xix, 146. 1883. 



DRAPER, HENRY. Researches upon the Photography of Planetary 

 and Stellar Spectra, xix, 231. 1883. 



PICKERING, WILLIAM H. A Method of Measuring the Absolute 

 Sensitiveness of Photographic Dry Plates, xx, 159. 1884. 



PICKERING, EDWARD C. A Photographic Study of the Nebula of 

 Orion, xx, 407. 1885. 



PENROSE, CHARLES B. Relation Between Superficial Energy and 

 Thermo-electricity, xx, 417. 1884. 



TROWBRIDGE, JOHN, and McRAE, AUSTIN L. The Effect of Temper- 

 ature on the Magnetic Permeability of Iron and Cobalt, xx, 462. 

 1885. 



PICKERING, WILLIAM H. Photography of the Infra-Red Region 

 of the Solar Spectrum, xx, 473. 1884. 



PICKERING, WILLIAM H. Methods of Determining the Speed of 

 Photographic Exposers, xx, 478. 1884. 



PICKERING, WILLIAM H. Principles involved in the Construction 

 of Photographic Exposers, xx, 483. 1885. 



WEBSTER, ARTHUR G. On a New Method for Determining the 

 Mechanical Equivalent of Heat, xx, 490. 1885. 



