Chemistry 623 



collection was subsequently presented by Mrs. Priestley to 

 the Institution for the Museum. 



In 1884 the Committee on the Indexing- of Chemical 

 Literature of the American Association for the Advancement 

 of Science announced that the Smithsonian Institution had 

 consented to publish indexes to chemical literature that had 

 been indorsed by the Committee. In accordance with this 

 agreement, the Smithsonian Institution has published " Index 

 to the Literature of Uranium, 1789-1885," by H. Carrington 

 Bolton (octavo, 32 pages); " Index to the Literature of the 

 Spectroscope, from the Beginning of our Knowledge of the 

 Subject until July, 1887," by Alfred Tuckerman (423 pages) ; 

 "Index to the Literature of Columbium, 1801-1887," by 

 Frank W. Traphagen (27 pages); "Index to the Literature 

 of Thermodynamics," down to the middle of the year 1889, 

 by Alfred Tuckerman (239 pages); "Bibliography of the 

 Chemical Influences of Light," 1891 (22 pages); "Bibliog- 

 raphy of Aceto- Acetic Ester," 1840-1892, by Paul H. Sey- 

 mour (148 pages); " Index of the Literature of Didymium" 

 (1842-1893), by A. C. Langmuir (20 pages), and "Indexes 

 to the Literature of Cerium and Lanthanum," 1751-1894, by 

 W. H. Magee (43 pages). 



Much new material pertaining to density of various sub- 

 stances had accumulated since Professor Clarke submitted his 

 original compilation of the " Constants of Nature " to the 

 Smithsonian Institution. Therefore, in 1888 he presented a 

 new edition (revised and enlarged) of Part i, " A Table of 

 Specific Gravity for Solids and Liquids," that contained "the 

 specific gravities of 5227 distinct substances and 14,465 sep- 

 arate determinations." This table contained 409 pages, and 

 formed about one-half of Volume xxxn of the "Smithsonian 

 Miscellaneous Collections." 



The announcement of the Hodgkins Fund prizes in 1893 



