INDEX TO VOLUME XLVL* 



Academy, National, meeting, at 



Baltimore, 7*2.. 

 Airplane Characteristics, Bedell, 



691. 

 Alaska, Paleozoic glaciation, Kirk, 



SIT- 



Aluminum, absorption of X-rays, 



Williams, 766. 

 American Journal of Science, 1818- 



1918, Dana, 1. 

 Astronomical Society, American, 



768. 

 Astronomy, Young, 542. 



B 



Barrell, J., growth of knowledge of 

 earth structure, 133. 



Bedell, F., Airplane Characteristics, 

 691. 



Benson, W. N., origin of serpen- 

 tine, 693. 



Blake, J. M., solving crystal prob- 

 lems, 651. 



Botany, development since 1818, 

 Goodale, 399. 



Browning, P. E., separation of ger- 

 manium, 663. 



Butts, C, geologic section of Penn- 

 sylvania, 523. 



Hypophosphates, preparation, 



Van Name and Huff, 587. 

 Iodides, detection, Curtman and 



Kaufman, 614. 

 Lead, isotopic, Clarke, 764. 

 Molecular frequency, Allen, 544. 

 — weights, apparatus for deter- 

 mining, Chapin, 613. 

 Osmium, new reaction, Tschu- 



gaeff, 689. 

 Periodic table, Hackh, 481. 

 Potash from kelp, recovery of, 



Higgins, 764. 

 Soils, organic matter in, Rather, 



688. 

 Vanadic acid, determination, 



Gooch and Scott, 427. 

 Vanadium in sedimentary rocks, 



Phillips, 473. 

 Vapors in gases, estimation of, 



H. S., and M. D. Davis, 688. 

 Zinc, determination of, Jamieson, 



614. 



Coal beds in West Virginia, Hen- 

 nen, 770. 



Coe, W. R., a century of zoology in 

 America, 355; notice of R. 

 Rathbun, 757. 



Colorado mineral springs, radio- 

 active properties, Lester, 621. 



Cramer, W., Chemical Physiology, 



549- 



Cristobalite, melting point, Fergu- 

 son and Merwin, 417. 



Crystal problems, Blake, 651. 



Cycads, American fossil, part VIII,. 

 Wieland, 645. 



Canada, Dept. of Mines, publica- 

 tions, 477. 



— geol. survey, 477, 547. 

 Carnegie Foundation, Bulletin XI, 



772. 

 Century of Science, 1818-1918, 1 et 



seq. 

 Ceramic Society, Journal, 619. 

 Chemistry, Hildebrand, 614. 



— Analytical, Getman, 765. 

 Villavecchia, 765. 



— of Foods, Sherman, 548. 



— Inorganic, Mellor, 541. 



— Laboratory Manual, Blanchard 

 and Wade, 542. 



— of Proteins, Robertson, 548. 



— progress of, 1818-1918, Wells and 

 Foote, 259. 



CHEMISTRY. 



Arsenic and Antimony, com- 

 pounds of, Morgan, 615. 



Barium and strontium, separa- 

 tion, Gooch and Soderman, 538. 



Germanium, separation, Brown- 

 ing and Scott, 663. 



* This Index contains the general heads. Chemistry, Geology, Minerals, Obituary, 

 Rocks ; under each the titles of Articles referring thereto are included. 



Am. Jotjr. Sci. — Fourth Series, Vol. XLVI, No. 276. — December, 1918. 

 38 



D 



Dana, E. S., American Journal of 



Science, 1818-1918, 1. 

 Davis, M. M., Jr., Dispensaries, 771. 

 Davis, W. M., Cedar Mt. trap ridge 



near Hartford, 476; notice of, 



G. K. Gilbert, 669. 

 Dispensaries, Davis and Warner, 



771. 

 Dunbar, C. O., Devonian of West 



Tennessee, 732. 

 Dustfall of March 9, 1918, Winchell 



and Miller, 599. 



Earth, Evolution of, Barrell, Schu- 



chert, etc., 770. 

 Electro-Analysis, Smith, 766. 



