XVI 



INDEX. 



Growth, hydration and, 346 

 Gun of seventy-five-mile range, bal- 

 listics of a, 2>7?> 



H 



Haupt, crib of Christ, xi 



Hayes, detection of submarines, x 



Hazen, political problems of central 



and southern Europe, iv 

 Howard, pink boUworm and the Eu- 

 ropean corn borer, vii 

 Hydration and growth, 346 



Ives, artificial formations resembling 

 lunar craters, x 



simplification of photography, 



xii 



J 



Jackson, A. V. W., glimpses of the 

 near east during the war, xi 



Jackson, C., bloodless removal of for- 

 eign bodies from the lungs through 

 the mouth by bronchoscopy, yi 



Jastrow, the eastern question, iv 



Johnson, E. R., what shall be done 

 with the railroads?, v 



Johnson and Benedict, energy loss of 

 young women during the muscular 

 activity of light household work, 89 



K • 



Kane, child maintenance at pubHc ex- 

 pense, xiii 



Kennelly and Velander, alternating- 

 current planevector potentiometer 

 measurements at telephonic fre- 

 quencies, 97 



Keyes, tectonics of Laccolithic moun- 

 tains, xiii 



Kunz and Stebbins, photo-electric 

 photometry of the 1918 eclipse, 269 



Lampland, Lowell Observatory eclipse 

 observations, June, 1918, Promi- 

 nences and coronal arches, 259 



Lanman, Benjamin Franklin's art as 

 applied to books for elementary 

 teaching, vi 



Laws, amendments to, ix 



Light in the study of ores and metals, 

 polarized, 401 



Lowell Observatory eclipse observa- 

 tions, June, 191 8, 259 



Luciopimelodinae, a new subfamily 

 of South American Siluridae, 448 



M 



Mabery, genesis of petroleum as 



shown by its nitrogen constituents, x 



MacDougal, hydration and growth, 



346 

 hydration of colloids and cell- 

 masses in propionic acid and its 

 amino-compounds, vii 

 McCollum, relation of the diet to 



pellagra, 41 

 Matthew, recent discoveries of fossil 

 vertebrates in the West Indies and 

 their bearing on the origin of the 

 Antillean fauna, 161 

 Mayor, detecting ocean currents by 

 observing their hydrogen-ion con- 

 centration, 150 

 Meteorological w'ork of the U. S. 

 Army, some scientific aspects of 

 the, 133 

 Members admitted: 

 Breasted, J. H., x 

 Farabee, W. C, xii 

 Mayor, A. G., v 

 Rosengarten, G. D., xii 

 Members deceased : 

 Abbott, C. G., xiii 

 Adam, Lucien, xii 

 Becker, G. F., v 

 Carnegie, Andrew, xiii 

 Crookes, Sir Wm., v 

 Doolittle, C. L., iv 

 Edmunds, G. F., iv 

 Farlow, W. G., xii 

 Foster, George C, iv 

 Gummere, F. B., xii 

 Haeckel, Ernest, xiii 

 Himes, C. F., iii 

 Hitchcock, C. H., xiii 

 Mansfield, I. F., xiii 

 Pickering, E. C, iv 

 Rayleigh, Lord, xiii 

 Raymond, R. W., iv 

 Redwood, Sir B., xiii 

 Retzius, Gustavus, xiii 

 Roosevelt, Theodore, iv 

 Sachse, J. F., xiii 

 Stephens, H. M., v 

 Ware, L. S., iii 

 Members elected, ix, x 

 Membership, acceptance of: 



Robert Grant Aitken, Sc.D., xii 

 Joseph Charles Arthur, Sc.D., xii 

 Edward W. Berry, xii 

 James Henry Breasted, A.M., 



Ph.D., xii 

 Ulric Dahlgren, M.S., xii 

 William Curtis Farabee, A.M., 

 Ph.D., xii 



