INDEX TO VOLUME XXXIX.* 



Academy, National, meeting at 



Chicago, 134 ; Washington, 610 ; 



Memoirs, Vol. XII, part 1, 229; 



Proceedings, Vol. I, No. 1, 228. 

 Adaptation, Lloyd, 612. 

 Adirondacks, age of igneous rocks, 



Gushing, 288. 

 Allegheny Observatory, publications, 



611. 

 Allen, F. I., thaumasite, 134. 

 Ampere molecular currents, Onnes, 



313. 

 Andersen, O., system anorthite-for- 



sterite-silica, 407. 

 Anderson, F. I., Electricity, 680. 

 Anticosti Island faunas, Twenhofel, 



130. 

 Arizona, Meteor Crater, Barringer, 



482. 



B 



Bailey, E. H. S., Food Products, 136. 



Barbour, E. H., new longirostral 

 mastodon, 87 ; Carboniferous plant 

 tissue, 173. 



Barus, C, repulsion of two metallic 

 disks, 93. 



Berry, E. W., Eocene ancestor of 

 the Zapodilla, 208. 



Bigelow on the solar constant, Very, 

 201. 



Birds, fossil, in the Marsh Collection, 

 Yale University, Shufeldt, 683. 



Blackwelder, E., calcareous algas in 

 the Middle Cambrian, Wyoming, 

 646. 



Blake, J. M., growing crystals for 

 measurement, 567. 



Bliss, A. R., Jr., Qualitative Chemi- 

 cal Analysis, 123. 



Bowen, N. L., silicate liquids, crys- 

 tallization and differentiation. 175. 



Bradley, W. M., footeite and con- 

 nellite, 670. 



Bragg, W. H. and W. L., X-Rays 

 and Crystal Structure, 678. 



Brandegee, M. M., hydrochloric 

 acid in estimation of organic oxy- 

 gen, 398. 



British Museum, publications, 325. 



Brooklyn Institute, bulletins, 685. 



Brown, E. W., simple apparatus for 



tidal analysis, 386. 

 Brown, T. C, development of the 



mesenteries in zooids of Anthozoa, 



535. 



Canada geol. survey, 481. 

 Carnegie Foundation, Bulletin 8, 611. 



— Institution, Year Book No. 13, 484. 

 Catskill Mts., physiography and 



geology, Rich, 137. 



Chamot, E. M., Chemical Micro- 

 scopy, 679. 



Chemical Technology, 5th ed., Lew- 

 kowitsch and Warburton, 122, 215. 



— Analysis, Qualitative, Bliss, 123. 

 Chemie, Physikalische, der Zelle, 



Hober, 324. 

 Chemistry, Physical, Findlay, 678 ; 

 Gray, 677. 



— Cyanogen Compounds, Williams, 

 476. 



CHEMISTRY. 



Acidimetric solutions, Dodge, 215. 



Acids, polythionic, determination, 

 Jamieson, 639. 



Aluminium, separation. Minnig, 

 197. 



Atomic weights of carbon, sulphur, 

 213. 



Cbloropicrin, production of, Datta 

 and Chatter jee, 475. 



Chromium sesquioxide, unstable, 

 Mixter, 295. 



Coal tar industry, Hesse, 121. 



Cobalt, electroplating with, Kal- 

 mus, Harper, etc., 677. 



Cuprous and cupric sulphides, de- 

 termination, Posnjak, 311. 



Elements, transmutation, Jorissen 

 and Vollgraff, 476. 



Ethvl hydracrylate, hydrolysis, 

 Drushel, 113. 



Gasolene vapor in air, determina- 

 tion, Burrell and Robertson, 475. 



Hydrochloric acid in estimation of 

 organic oxygen, Drushel and 

 Brandegee, 398. 



Hydrogea, production, Seeker, 600. 



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

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



