178 BULLETIN 193, UNITED STATES NATIONAL MUSEUM 



Circ 

 No. 



30. A list of birds the eggs of which are wanted to complete the series in the 



National Museum, with instructions for collecting eggs. By Charles E. 

 Bendire. Pp. 1-4. 1884. 



31. Plan to illustrate the mineral resources of the United States and their utilization, 



at the World's Industrial and Cotton Centennial Exposition of 1884-1885, 

 at New Orleans. By Fred. P. Dewey. Pp. 1-8. 1884. 



32. Classification of the materia medica collection of the U. S. National Museum, 



and catalogue of specimens. By James M. Flint. (Revised and extended by 

 Henry G. Beyer). Pp. 1-39. 1885. 



33. Notes on the preparation of rough skeletons. By Frederic A. Lucas. Pp. 1-8, 



12 figs. 



34. Circular for the guidance of persons desiring to make exchanges of birds or 



birds' eggs with the National Museum. 1 p. 1886. 



35. Concerning the lending of type specimens. By Spencer F. Baird. 1 p. 1886. 



36. Circular concerning the department of antiquities. By S. P. Langley. 1 p., 



5 pis. 1887. 



37. Catalogue of the contributions of the section of graphic arts to the Ohio Valley 



Centennial Exposition, Cincinnati, 1888. By S. R. Koehler. 31 pp. 1887. 



38. Contributions of the department of transportation and engineering to the Ohio 



Valley Centennial Exhibition, 1888. By J. Elfreth Watkins. Pp. 1-18. 1888. 



39. The contribution of the section of Oriental antiquities to the Ohio Valley 



Centennial Exhibition. By Cyrus Adler. Pp. 1-7. 1888. 



40. Description of exhibit made by the department of prehistoric anthropology in 



the National Museum at the Ohio Valley and Central States Exposition in 

 Cincinnati, Ohio, 1888. By Thomas Wilson. Pp. 1-33, 50 figs. 1888. 



41. Guide to a collection illustrating the families of mammals, exhibited in the Ohio 



Valley Centennial Exposition in 1888 by the U. S. National Museum. By 

 Frederick W. True. Pp. 1-26. 1888. 



42. Circular relating to prehistoric anthropology. By Thomas Wilson. Pp. 1-16, 



4 figs. 1888. 



43. To the correspondents of the U. S. National Museum. [With a view to 



securing accessions for the library.] By G. Brown Goode. 1 p. 1894. 



44. To the correspondents of the U. S. National Museum. [With a view to securing 



publications for the library in exchange.] By G. Brown Goode. Pp. 1-8. 1894. 



45. To the correspondents of the U. S. National Museum. [With a view to 



securing authors' separates and reprints for the library.] By G. Brown 

 Goode. 1 p. 1894. 



46. [On the proposed revision of Bulletin 22, relating to the flora of the District 



of Columbia.] By G. Brown Goode. 2 pp. 1895. 



47. Circular in regard to the identification of specimens of raollusks by the Na- 



tional Museum. By G. Brown Goode. 2 pp. 1895. 



48. Circular in regard to bones and teeth of the mastodon and mammoth. By 



Frederic A. Lucas. Pp. 1-4, 2 figs. 1897. 



49. [Relating to the North American Violaceae.] By Frederick W. True. 1 p. 



1899. 



50. [Transmitting questions relating to birds and birds' eggs.] By Richard Rath- 



bun. 3 pp. 1901. 



51. Circular to accompany collections illustrating rock-weathering and soil-formation 



which have been prepared by the department of geology, U. S. National 

 Museum, under direction of Dr. George P. Merrill, head curator. Pp. 1-3. 

 Dec. 1, 1901. 



52. Circular to accompany collections illustrating rock-weathering and soil-formation 



which have been prepared by the department of geology, U. S. National 

 Museum. Pp. 1-2. 1928. 



53. Mammoths and mastodons. By James W. Gidley. Pp. 1-5, 2 figs. Jan. 28, 1929. 



