CHEMIKTRV. ■')-2\) 



August, 1882, that they had cousidered three methods of colU'ctiiij; m:i 

 terial for the indexes, viz: 



1. Reviewing the Catalogue of Scientitic Papers publislicd by tlic 

 Koyal Society (8 vols., 4to). 



2. Indexing special jotirnals by different individuals and collating 

 the matter. 



3. The independent plan, whereby each chemist indexes all the jour- 

 nals available to him with reference to a given element in which he is 

 presumably especially interested. 



Each of these schemes is open to objections, which need not be named. 

 On the whole, the third i)lan seemed to a majority of the committee the 

 only feasible one for the present. 



The report considers also the best arrangement of material, and three 

 ways are suggested : (1) Chronologically ; (2) alphabetically by authors ; 

 (3) topically. 



The committee do not venture to dictate to volunteers and independ- 

 ent workers^ but recommend the chronological arrangement, accom- 

 panied by a topical index. 



In September, 1884, the committee reported that several indexes had 

 been published during the twelve months intervening, and that more 

 were in progress. They also announced that the Smithsonian Institu- 

 tion has consented to publish the indexes to chemical literature in- 

 dorsed by the committee, limiting somewhat the number of pages per 

 annum. The Smithsonian Institution also distributes free of expense 

 the circulars of the committee. 



The indexes already published include the following : Uranium, by 

 H. Carrington Bolton, 15 pp.; Manganese (1596-1874), by H. Carrington 

 Bolton, 44 pp.; Titanium, by Edward J. Hallock, 22 pp.; Vanadium, 

 by G. Jewett Eockwell, 13 pp.; Ozone, hy Albert K. Leeds, 32 pp.; 

 Peroxide of Hydrogen (1818-'78), by Albert R. L6Ms, 11 pp. ; Ekc- 

 troUjais, by W. Walter Webb, 40 pp.; Speed of Chemical Reactions, by 

 Robert B. Warder, 3 pp. ; Starch- Sugar, by Edward J. Hallock, 44 pj).; 

 Ozone (1879-83), by Albert R. Leeds, 16 pp.; Peroxide of Hydrogen 

 (1879-83), by Albert R. Leeds, 3 pp.; Dictionary of the Action of Heat 

 upon Certain Metallic Saltn, by J. W. Baird and A. B. Prescott, 70 pji. 

 8vo. Xew York. 



The lirst two were published in the Annals of the New York Lyceum 

 of Natural History and all the rest in the Annals of the New York Acad- 

 emy of Sciences, except that on Starch- Sugar, which was published by 

 the LTnited States Internal Revenue Department, Washington, 1). C; 

 and that on Speed of Chemical Reactions, which appeared in the Proceed- 

 ings of the American Association for the Advancement of Science, 



A limited number of those published by the New York Academy of 

 Sciences can be had of Prof. D. S. Martin, 236 West Fourth street, New 

 York City, th€i chairman of the publication committee. 

 S. Mis. 33 34 



