NATURALISTS' DIRECTORY. 11 



CORRECTIONS TO THE DIRECTORY. 



No. 23. E. T. Cox. Should be North American. 



No. 90. Dr. NEWBURT is now Professor of Geology in Columbia Col- 

 lege. For correct address see No. 341. 



No. 171. Should be CHRISTIAN FEBIOBR. 



No. 319. Mr. HYATT, is now residing in Salem. For correct address 

 see No. 482. 



ADDITIONS TO THE DIRECTORY. 



MINERALOGY. 



243, a. . Prof. G. C. SWALLOW, (State Geologist of Missouri and Kan- 

 sas), Columbia, Boone Co., Mo. 



201, a. J. B. KEVINSKI, Lancaster, Pa. Local. 



GEOLOGY. 



4, a. WILLIAM ANDREWS, Cumberland, Md. Local. 

 27, a Dr* JOHN DE LASKI, West Falmouth, Me. Local. Special, 

 Glaciers, 



58, a. JAMES HYATT, Bengali, N. Y. Local. 



PALAEONTOLOGY. 

 276, a. WILLIAM ANDREWS, Cumberland, Md. Local. > 



NOTICES OP PROPOSED WORKS ON NAT- 

 URAL HISTORY. 



TRYON REAKIRT, 335 North 3d street, Philadelphia, Pa. 



Is engaged in preparing a Synopsis of the Diurnal Lepidoptera of the 

 Rocky Mountains and Trans-Mississippi Plains. Mr. Reakirt would be 

 happy to receive any specimens from these regions for examination. 

 ARTHUR M. EDWARDS, 115 John street, New York, N. Y: 



Is preparing a work on the Bibliography of the Diatomacese ; also a 

 List of the described species of Diatomaceas, with references to the original 

 descriptions and figures ; to be published in the Proceedings of the Essex 

 Institute. For further information address Mr. Edwards. 

 PROF. JAMES HUBBERT, St. Francis College, Richmond, Canada Bast. 



Is preparing a work on the Botany of Canada, entitled A Handbook of 

 the Canadian Flora, being a description of the flowering plants, ferns and 

 mosses indigenous to or naturalized in Canada. A comparison of the Ca- 

 nadian Flora with that of Great Britain, and especially with that of the 

 highlands of Germany will be given, and particular attention will be paid to 

 the limitation of species. 



REV. DR. M. A. CURTIS, Hillsborough, N. C. 



Is preparing a work on the principal eatable species of Mushrooms and 

 other Fungi, of this country, with colored figures. 



