INDEX TO VOLUME L.* 



A 



Academy, National, meeting at 



Princeton, 473. 

 Agar, W. E., Cytology, 77- 

 Agelacrinitid, from the Chazy of 



New York, Clark, 69. 

 Alcock, F. J., Athabaska Series, 25. 

 Anderson Esker, Reeves, 65. 

 Animal Light, Harvey, 474- 

 Arctic Expedition, Norwegian, 



1 898- 1 902, 169. 

 Arizona, watering places, Bryan, 



188. 

 Arldt T., Paleogeography, 238. 

 Artiodactyls, new Tertiary, Lull, 83. 

 Athabaska Series, Alcock, 25. 



B 



Bassler, R. S., Cambrian, and Ordo- 



vician, of Maryland, 237. 

 Bean, fossil sea, Venezuela, Berry, 



310. 

 Berry, E. W., lower Cretaceous of 



Maryland, 48; floras, upper Cre- 

 taceous of Tennessee, etc., 240; 



fossil sea bean from Venezuela, 



310; age of Dakota flora, 387. 

 Binary, system akermanite-gehlen- 



ite, Ferguson and Buddington, 



131. 

 Biology, Animal, Shull, Larue and 



Ruthven, 76. 

 Boltwood, B. B., relative activity 



of radium and uranium, 1. 

 Botany, Densmore, 78. 



— Problems in, Eikenberry, 78. 

 British Museum, publications, 473. 

 Brown, J. C, History of Chemistry, 



463. 

 Bryan, K., rock tanks and charcos, 



188. 

 Buckman, S. S., Brachiopoda of 



Burma, 74. 

 Buddington, A. F., binary system 



akermanite-gehlenite, 131. 



C 



Calcite group, crystal structures, 



Wyckoff, 317. 

 Carnegie Foundation, report on 



preparation of teachers, 171. 



— Institution, publications, 473. 

 Chemical French, Dolt, 463. 



— Reactions, Falk, 464. 

 Chemistry, Colloid, Hatschek, 73. 



— History of, Brown, 463. 



— Inorganic, Molinari, 73. 



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

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



CHEMISTRY. 



Aqua regia, action on gold-silver 



alloys, 315. 

 Atoms, intermolecular transposi- 

 tions, von Hevesy and Zech- 



meister, 314. 

 Carbohydrates and the gluco- 



sides, Armstrong, 464. 

 Glucosane, Pictet and Castan, 



392. 

 Hydrogen, desulphurizing action 



on coke, Powell, 463. 

 Iron as thiocyanate, estimation, 



Willstatter, 392. 

 Lead isotopes, melting points, 



Richards and Hall, 314. 

 — supposed allotropic form, 



Thiel, 392. 

 Paraffine, oxidation, Kelber, 72. 

 Potash salts in the United States, 



Ruhm, 315. 

 Radium-uranium ratio, Lind and 



Roberts, 72; relative activity, 



Johnstone and Boltwood, 1. 

 Sucrose in acid vegetable juices, 



Colin, 393. 

 Zirconium, determination, Smith 



and James, 393. 

 Clark, T. H., agelacrinitid, from 



Chazy of New York, 69. 

 Cretaceous, lower, in Maryland, 



Berry, 48. 

 Cross, W., obituary notice of Louis 



V. Pirsson, 173. 

 Crystal structures of calcite group, 



Wyckoff, 317. 

 Crystallography and Mineralogy, 



new journal, Goldschmidt, 398. 

 Cyperaceae, studies, No. XXX, 



Holm, 159. 

 Cytology, Agar, 77. 



Dakota flora, age, Berry, 387. 

 Davies, A. M., Paleontology, 467. 

 Diamonds, in 19 19, 472. 

 Densmore, H. D., Botany, 78. 

 Devonian of Central Missouri, 



Greger, 20. 

 Diastrophism, Schuchert, 399. 

 Dolt, M. L., Chemical French, 463. 

 Duclaux, E., Pasteur, 80. 



Earthquake, of 1918 in Porto Rico, 

 236. 



