686 



SUBJECT INDEX 



Mustard "gas," some physical con- 

 stants of. Leason H. Adams and 

 Erskine D. Williamson. 30. 



Soils, the statement of acidity and 

 alkalinity, with special reference to. 

 Edgar T. Wherry. 305. 



Solids, nature of the forces between 

 atoms in. R. W. G. Wyckoff. 



565. 

 *Sulfur dioxide, thermal dissociation 

 of. J. B. Ferguson. 599. 



Physics. fAtmospheric-electric observ- 

 ations made during the solar eclipse 

 of June 8, 1918, some results of. 

 S. J. Mauchly. 269. 



*Baume scale for sugar solutions, new. 

 Frederick Bates and H. W. 

 Bearce. 169. 



*Calorimetric lag. Walter P. White. 

 46. 



*Calorimetric precision, the conditions 

 of. Walter P. White. 103. 



*Electric furnace, tempera tiu-e uni- 

 formity in. John B. Ferguson. 80. 



fForces, "physical" vs. "chemical." 

 P. V. Wells. 361. 



Glass, relation between birefringence 

 and stress in several types of. 

 L. H. Adams and E. D. William- 

 son. 609. 



*Heat convection in air, and Newton's 

 law of cooling. W. P. White. 17. 



flnvar, comparison of, with steel, as 

 shown by the rates of high grade 

 watches. A. F. Beal. 643. , 



fMagnetic analysis. R. L. Sanford. 

 450. 



fMagnetic observations during the 

 solar eclipse of June 8, 19 18, results 

 of. L. A. Bauer. 22. 



fMagnetized elliptic homoeoid, the 

 field of a uniformly, and applica- 

 tions. L. A. Bauer. 267. 



*Newton's law of cooling, heat con- 

 vection in air, and. Walter P. 

 White. 17. 



*Photoelectric properties of molyb- 

 denite. W. W. CoBLENTz and H. 

 Kahler. 553- 



Photoelectric sensitivity of molyb- 

 denite, the spectral. W. W. COB- 

 LENTz and H. KahlER. 537. 



*Planck radiation law, necessary 

 physical assumptions underlying 

 proof of. F. Russell v. Bichow- 



SKY. 18. 



*Platinum, specific heat of, at high 

 temperatures. Walter P. White. 



17- 

 fSolids, change of state in. W. P. 



White. 351. 

 *Specific heats at high temperatures, 



the general character of. Walter 



P. White. 46. 

 *Specific heat determination at higher 



temperatiu-es. Walter P. White. 



598. 

 *Silicate specific heats. Second series. 



Walter P. White. 627. 

 *Sugar solutions, new Baume scale 



for. Frederick Bates and H. W. 



Bearce. 169. 

 *Temperature and strain distribution 



in glass. E. D. Williamson. 349. 

 *Temperature distribution in solids 



during heating or cooling. E. D. 



Williamson and L. H. Adams. 



626. 

 *Temperature uniformity in an elec- 

 tric furnace. John B. Ferguson. 



80. 

 *Thermal expansion of molybdenum, 



preliminary determination of. 



Lloyd W. Schad and Peter Hid- 



NERT. 341. 

 fTime intervals, measurements of 



short. H. L. Curtis and R. C. 



Duncan. 642. 

 *Ultra- violet and total radiation, the 



decrease in, with usage of quartz 



mercury vapor lamps. W. W. 



CoBLENTz, M. B. Long and H. 



Kahler. 169. 



