SUBJECT INDEX 



617 



fCalibration of precision end gages. 

 H. G. Boyd and C. G. Peters. 

 526. 



Cathetometer, a simple substitute 

 for. J. B. Ferguson. 285. 



Contrast sensibility of the eye. Enoch 

 Karrer and E. P. T. Tyndall. 

 325. 



fContrast sensibility of the eye as a 

 factor in the resolving power of the 

 microscope. F. E. Wright. 475. 



fContrast sensibility of the eye under 

 low illumination. Enoch KarrER. 

 475. 



fDiffusion of light along a search- 

 light beam. Enoch Karrer. 475. 



*Dilatometer, a new interferential. 

 Irwin G. Priest. 324. 



flonization and resonance potentials 

 for electrons in vapors of lead and 

 calcium. F. L. Mohler, Paul 

 D. FooTE and H. F. Stimson. 

 179, *324. 



*Mathematical physics, conception of 

 the business of. R. C. Tolman. 

 275. 



*Reflecting power of stellite and lac- 

 quered silver. W. W. CoblEntz and 

 H. Kahler. 22. 



*Solidification points, standardized 

 method for the determination of, 

 especially of naphthalene and paraf- 

 fin. R. M. WiLHELM and J. L. 

 Finkelstein. 42. 



*Spectral photoelectric sensitivity of 

 silver sulphide and other substances. 

 W. W. Coblenz and H. Kahler. 

 43. 



fSpectro-photoelectrical sensitivity in 

 solids. W. W. CoBLENZ. 524. 



*Sulphur boiling point, standardiza- 

 tion of. E. F. Mueller and H. A. 

 Burgess. 42. 



*Thermocouples, tables and curves 

 for use in measuring temperatures 

 with. Leason H. Adams. 43. 



Thermostats, methods of increasing 

 the precision of. WALTER P. 

 White. 429. 



Plant Pathology. fDenmark, plant 

 pathology in, in recent years. 

 F. KoLPiN Ravn. 502. 

 Radiotelegraphy . *AirpIane antenna 

 constants. J. M. Cork. 474. 



Beat reception, notes on. L. W. 

 Austin and W. F. Grimes. 174. 



Musical reception with continuous 

 waves without local oscillation. 

 L. W. Austin. 223. 



Transmitter, an electron-tube, of 

 completely modulated waves. Lewis 

 M. Hull. 316. 

 Science, General. §Board of Surveys 

 and Maps. 82, 115. 



§ Congress, matters of scientific in- 

 terest in. 54, 148, 243, 398, 423. 



§Scientific notes and news. 27, 54, 

 81, 115, 148, 183, 213, 243, .283, 

 311, 337, 383, 398, 423, 449, 503, 

 587, 599. 



§Surveys and maps. Board of. 245. 



§Surveys and Maps, Federal Board 

 of. 213, 245 

 Scientific Research. Economic impor- 

 tance of the scientific work of the 

 Government. Edward B. Rosa. 

 341. 

 Sociology. fChild welfare work, na- 

 tional importance of. Arthur 

 Newsholme. 394. 

 Spectroscopy. *Wave lengths in the 

 spectra of krypton and xenon, 

 measurement of. Paul W. Mer- 

 rill. 44. 

 Technology. *Cement for spark plugs. 

 Homer F. Staley. 302. 



*Clays, properties of American bond 

 and their use in graphite crucibles 

 and glass pots. A. V. BlEininger. 

 328. 



fHypersensitizing commercial pan- 

 chromatic plates. S. M. Burka. 

 525. 



*Leather, sole, effects of glucose 

 and salts on wearing quality of. 



P. L. WORMLEY, R. C. BoWKER, 



R. W. Hart, L. M. Whitmore and 

 J. B. Churchill. 178. 



