198 



SCIENCE 



[N. S. Vol. XLIX. No. 1259 



President — J. S. Ames. 

 Vice-president — W. C. Sabine. 

 Secretary — ^D. C. Miller. 

 Treasurer — G. B. Pegram. 



Members of the Council (four year term) — G. K. 

 Burgess, J. C. MoLennon. 



Member of the Council (one year, unexpired 

 term) — Max Mason. 



Members of the Board of Editors of the Phys- 

 ical Bevien — Henry Crew, L. V. King, H. S. TJliler. 

 Colonel Millikan explained the purposes of the 

 Smith-Howard Bill now before Congress, authoriz- 

 ing federal cooperation with the states for the pro- 

 motion of engineering and industrial research. 

 After general discussion it was unanimously voted 

 that the American Physical Society favors federal 

 aid and cooperation with the several states in sup- 

 port of research in science and engineering and in 

 industrial research. The society favors the creation 

 of boards of eminent scientists and engineers within 

 each state for the administration of the funds ap- 

 propriated for all research within the state. 



At the morning sessions of December 27 and 28, 

 1918, thirty papers were presented as follows, four 

 beSng read by title : 



The unique system of units: W. W. Strong. 

 A simple stretched wire dilatometer: Arthur W. 



Gray. 

 Monochromatic and neutral tint screens in optical 



pyrometry: "W. E. Foesythe. 

 The temperature, pressure, and density of the at- 

 mosphere in the region of northern France : W. J. 

 Humphreys. 

 Befinements in spherometry : G. W. Mopfitt. 

 A new type of hot wire anemometer: T. S. Taylor. 

 The linear thermal expansion of glass at high tem- 

 peratures: C. G. Peters. 

 Some characteristics of glasses in the annealing 



range: A. Q. Tool and J. Valasek. 

 Striw in optical glass: L. E. Dodd and A. K. 



Payne. 

 Preliminary determination of the thermal expan- 

 sion of molybdenum: Lloyd W. Schadd and 

 Peter Hhsnert. 

 On the characteristics of electrically operated tun- 

 ing forlcs: H. M. Dadourian. (Read by title.) 

 Ionization and resonance potentials for electrons in 

 vapors of arsenic, rubidium and cwslum : Paul D. 

 PooTE, 0. RoGNLEY and F. L. Mohler. 

 Absorption coefficient of the penetrating radiation : 



Oliver H. Gish. 

 Photoelectric sensitivity vs. current rectification in 

 molybdenite: W. W. Coblentz and Louise S. 

 McDowell. 



A device for the automatic registration of the a- 

 and ^-particles and y-ray pulses: Alois F. 



KOVARIK. 



Note on the distribution of energy in the visible 

 spectrum of a cylindrical acetylene flame: Ed- 

 ward P. Hyde, "W. E. Porsythe and F. E. Cady. 



Preliminary note on the luminescence of the rare 

 earths: E. L. Nichols, D. T. Wilbeb and F. G. 

 Wick. , 



On the critical absorption frequencies of chemical 

 elements of high atomic numbers: William 

 DuANE and Takio Shimizu. 



Some interesting results of eclipse magnetic obser- 

 vations: L. A. Bauer. 



The minimum temperature at the base of the strato- 

 sphere: W. J. Humphreys. (Read by title.) 



Why clouds never form in the stratosphere: W. J. 

 Humphreys. (Read by title.) 



Speeds in signaling by the use of light: W. E. 

 Forsythe. 



Thermal conductivity of various materials: T. S. 

 Taylor. 



Further observations on the production of metallic 

 spectra by cathode luminescence: Edna Carter 

 and Arthur S. King. 



Effect of crystal structure upon photoelectric sensi- 

 tivity: W. W. Coblentz. (Read by title.) 



A mechanically blown ivind instrument: A. G. 

 Webster. 



The dynamics of the rifle fired at the shoulder: A. 

 G. Webster. 



Interior ballistics, by a new gun indicator: A. G. 

 Webster. 



Besidual gases in highly exhausted glass bulbs: J. 

 F. Shrader. 



Silvering quarts fibers by cathodic sputtering : J. F. 

 Shrader. 



Dayton C. Miller, 



Secretary 



SCIENCE 



A Weekly Journal devoted to the Advancement of 

 Science, publishing the official notices and pro- 

 ceedings of the American Association for 

 the Advancement of Science 



Published every Friday by 



THE SCIENCE PRESS 



LANCASTER, PA. GARRISON, N. Y. 



NEW YORK, N. Y. 



Entered in the post-office it Lancaster, Pa., bb vecond cJdti matter 



