Bibliography 799 



Botany. Sereno Watson prepared a comprehensive " Bib- 

 liographical Index to North American Botany ; Part I, Poly- 

 petalae." (1878.) This contains citations of authorities for 

 all the recorded indigenous and naturalized species of the 

 flora of North America, with a chronological arrangement 

 of the synonymy. 



Doctor Horatio C. Wood, Professor of Botany, University 

 of Pennsylvania, published in the " Contributions to Know- 

 ledge" a "Contribution to the History of the Fresh Water 

 Algae of North America," to which is added a bibliography. 



Chemistry. The Committee on Indexing Chemical Litera- 

 ture, appointed by the American Association for the Advance- 

 ment of Science in 1882, two years later secured the consent 

 of the Smithsonian Institution to publish such chemical 

 bibliographies as might be recommended by the committee. 

 By means of this cooperation chemical students have been 

 provided with several indexes of a technical character, whose 

 value increases as their number multiplies ; they include : 



"Index to the Literature of Uranium," by H. Carrington 



Bolton, 1885. 

 " Index to the Literature of the Spectroscope," by Alfred 



Tuckerman. 1888. 

 " Index to the Literature of Columbium," by Frank W. 



Traphagen, 1889. 

 " Index to the Literature of Thermodynamics," by Alfred 



Tuckerman, 1890. 

 "A Bibliography of the Chemical Influence of Light," by 



Alfred Tuckerman, 1891. 

 "Bibliography of Aceto Acetic Ester," by Paul H. Seymour, 



1894. 

 " Indexes to the Literature of Cerium and Lanthanum," by 



W. H. Magee, 1895. 

 " Index to the Literature of Didymium," by A. C. Langmuir, 



1895- 



