198 REPORT OF NATIONAL MUSEUM, 1892. 



sent from the dry regions of western Mexico. The pest is a small 

 geoinetrid larva about 8 mm long. In order to get rid of this larva, a 

 wooden box with close-fitting top was prepared, of the following dimen- 

 sions : 4 feet long by 20 inches wide and 2 feet deep. This box was 

 then filled with bundles of plants, a cup holding about half a gill of 

 bisulphide of carbon was placed with them, covered, and allowed to 

 remain for twenty-four hours or more. This operation was repeated 

 until all the duplicates had been poisoned. Our large collections are 

 treated in this manner when they first arrive. 



During the year a card catalogue of all the botanical works in the 

 libraries to which this department has access, has been begun. Already 

 the library of the Department of Agriculture has been catalogued, and 

 many of the books in the Library of Congress and the library of the 

 Smithsonian Institution. 



ACCESSIONS. 



The accessions received during the year ending June 30, 1802, num- 

 ber 512 (catalogue Xos. 001 to 1503), of which 41 were received through 

 the National Museum (as shown in the tabulated statement accompany- 

 ing this report); the rest, mostly from collectors employed by the De- 

 partment of Agriculture. The following are some of the more impor- 

 tant accessions: 



Two sets of Pringle's Mexican collection, of 2X7 species each, one obtained by dona- 

 tion and one by purchase. 



About 50 specimens from Dr. Charles Mohr, mostly ballast plants collected about 

 Mobile, Alabama. 



A set of 47 Californian species, from J. (J. Lemmon, obtained by donation. 



A set of 60 species from C. V. Piper, of Washington, obtained by exchange. 



A set of 33 specimens of eastern United States plants obtained by donation from 

 William M. Canby. 



A set of 107 specimens obtained by exchange from G. McCarthy. 



A collection of 2,150 specimens made by Frederick V. Coville on the Death Valley 

 Expedition. 



A set of 285 species obtained by purchase from A. A. Heller. 



A set of 450 species of New Zealand plants, sent by J. F. Chcescman. 



A set of 125 species of African plants obtained by donation from J. M. Wood, 

 Natal, Africa. 



A collection of 776 Californian species from S. B. Parish, obtained by exchange. 



A set of 470 South American plants obtained by purchase from Thomas Morong. 



A set of 1,340 specimens from C. Copineau, of Paris, obtained by exchange. 



A set of 297 species from the Malay peninsula obtained by purchase from C. Curtis. 



A set of 1,709 specimens, collected by G. C.Nealley in Texas and Arizona. 



A set of 2,530 specimens from United States and Europe, obtained by exchange and 

 purchase from J. M. Holzinger. 



A set of 250 plants, collected by Dr. E. A. Mearns, IT. S. A., in Minnesota and Texas. 



A set of 3,521 specimens from Mexico and Arizona, collected by Dr. Edward 

 Palmer. 



A set of 733 plants collected in the Indian Territory by C. S. Sheldon. 



A set of 615 specimens collected by F. F. Wood in Minnesota and Canada. 



A set of 106 plants collected by S. M. Tracy in Mississippi. 



A set of 1,793 specimens collected in Nebraska by P. A. Rydberg. 



