REPORT OF THE SECRETARY. 15 



liograpliy of tlie subject by alpliabetical arraiigemeut of the writers. 

 8vo. 47 pp. 



G43. "An Account of tlie Progress in Zoology in the year 1885." By 

 Theodore Gill. 8vo. 53 pp. 



G44. "Observations on Volcanic Eruptions and Earthquakes iu Ice- 

 land, within Historic Times." Translated and condensed from a history 

 by Th. Thoroddsen. By George IT. Boehmer. 8vo. 47 pp. 



Bulletins of the Kational Museum. — This series and that of the Pro- 

 ceedings, illustrating the material of the U. S. National Museum, are 

 issued in the first instance under the authority of the honorable Secre- 

 tary of the Interior, as prepared by the Smithsonian Institution. 



" Bulletin U. S. National Museum, No. 23. The published writiugs of 

 Isaac Lea." By Newton P. Scudder. This is the second of a proposed 

 series of bibliographies of American naturalists who have contributed 

 to the National Museum. The great value of such bibliographies is 

 fully appreciated by all engaged in natural-history studies or investi- 

 gations. Dr. Lea has for more than half a century contributed to vari- 

 ous scientific journals the result of his extensive miueralogical and 

 biological researches j commencing with an account of local minerals, 

 published iu the Journal of the Academy of Natural Sciences of Phila- 

 delphia, iu 1818, and giviug, iu 187G, a study of "Inclusions" iu gems. 

 Perhaps his most important labor has been the series of investigations 

 in the land and fresh-water mollusks, and especially iu the family of 

 the TJnionidcB : the earliest of which was published in the Transactions 

 of the American Philosophical Society, iu 1827. Dr. Lea has contrib- 

 uted largely of his collections to the National Museum, and at the 

 advanced age of ninety-four still enjoys good health and complete in- 

 tellectual vigor. 



Of the i)reseut Bulletin the first 53 pages are occupied with a bio- 

 graphic sketch of the subject. The bibliography projier extends to 171 

 pages, giving in full the titles and sources of 279 memoirs and other 

 publications iu chronological order. The compilation concludes with a 

 list of the genera and species discussed and described by Dr. Lea, which 

 occupies 100 pages. The work forms an octavo volume of lix ■{- 278 

 pages (including the index), and is illustrated by an engraved portrait 

 of Dr. Lea. 



"Bulletin U. S. National Museum, No. 28. A Manual of American 

 Land Shells." By W. G. Binuey. This work presents an enlarged and 

 revised edition of the "Land and Fresh- water Shells of North America:" 

 Part I ; by W. G. Binney and T. Bland ; published by the Smithsonian 

 Institution in 18G9, and included in the eighth volume of the Miscel- 

 laneous Collections. Mr. Thomas Bland, Mr. Biuney's former coadjutor, 

 is no longer with us, having died August 20, 1885. This treatise, as a 

 separate volume, has been for some time out of print. The present 

 work has been entirely re- written and re-arranged, occupying 200 more 



