27ii 



ADDITIOIfS 10 LIBEAEY. 



Washing-ton — contimied. 



Compressire strengtli of Building Stone, G-illmore. 

 Keport of tlie Eeclamation of the Alluvial Basin of the Mississippi 

 Eirer ; with Plates. 



— The Office oftTie Chief of JEJn^ineers. 

 A Sketch of the services of the late Mr. W. Seaton. 

 The Scientific Education of Mechanics and Artisans. 

 Rex^ort of Explorations in 1873, of the Colorado of the West and 



its Tributaries. 

 Thoughts on the nature and origin of Force, by W. B. Taylor. 

 Annual Eeport of the Board of Eegents of the Sniithsoman 

 Institution for the year 1874. 

 — The Smithsonian Institution. 

 Reports of the Department of Agriculture for 1872-73-74. 

 Monthly Eeports of the Department of Agriculture for 1872-73-74. 



— The I)e_partme~iit. 

 Eeport of the Smithsonian Institution, 1874. 

 Eeport of Explora-tions in 1873 of the Colorado of the West and 



its Tributaries. (Two copies.) 

 Memou's of the American Association for the advancement of 



Science. Yol. I. 

 Revision of the hitherto known Species of the genus Chionobas in 



North America, by Saml. H. Scudder. 

 Entomological Notes by S. H. Scudder, 1, 2, 3, and 4. 

 Annual Export of the Trustees of the Museum of Comparative 



Zoology, 1874. 

 Thoughts on the nature and origin of Eorce, by W. B. Taylor. 

 Distribution of Insects in New Hampshire. 

 Historical Sketch of the generic names proposed for Butterflies, by 



Saml. H. Scudder. 

 The Structui'e and transformation of Enmseus Atala. 

 Memoirs of the Boston Society of Natural History. Yol. II, Part 



III, No. lY. 

 Notes on the Stridulatiou of some New England Orthoptera. 

 Notice of some North American Species of Pieris. 

 Note sur I'CEuf et le Jeune Age de Chenille d'GEneis aello. 



— The Smithsonian Institidion. 

 The Two Prmcipal Groups of Urbicolae Tentamen determinationis 



di Lepidoptera. 

 Maps of Indian Territory — Euffner. 

 Do. do. Jackson. 



Do. Montana. 



Do. New Mexico and Arizona. 

 Do. New Mexico — Euffner. 

 Do. do. Morrison. 



Do. Nebraska and Dakota. 

 Do. Dakota. 



Do. Western Territories and Northern Extension. 

 Do. Kansas, Texas, &c. 

 Do. Part of Nebraska. "^ 



Do. do. 



Do. do. and Wyoming, j. j^^^^^ 



Do. do. 



Do. do. 



Do. Middle and Eastern Tennessee. 



Do. S. and S.E. Nevada. 



