lS95-J ACCESSIONS TO LIBRARY. 329 



On the Fresh Water Algie and their Relation to the I'urity of l'ul)lic Water 



Supplies. 

 Discussion on Self-Purification of Flowing Water. 

 On some Recent Advances in Water Analysis. 

 The Application of Intermittent Filtration to Domestic tilters. 



HENRY H. RUSBY. 



The Botanical Names of the U. S. PharmacopcL'ia. 



HENRI DE SAUSSURE. 



Coup d'ceil sur I'Hydrologie du Mexique. 



La Question du Lac (Lemani. 



Essai d'une faune des Myriapodes du Me.\ique. 



Svnopsis des Mantides Americains. 



L'Aqueduc de Carthage. 



Spicilegia Entomologica Genavensia, Pts. 1-2. 



Prodromus tEdipodiorum. 



Additamenta ad Prodoromum Gidipodiorum. 



iM. EMILE SCHWtERER. 



Les Interferences Electriques. 



JOHN TEBBUTT. 



History and Description of Mr. Tebbutt's Observatory, Windsor, New South 



Wales. 

 Report of Mr. Tebbutt's Observatory, 1890. 

 The Sydney Observatory. 



M. A. VEEDER. 



The Recurrence of Hurricanes in the Solar Magnetic 26.68 Day Period. 



C. IJ. WALCOTT. 



The Taconic System of Emmons, and the use of the name Taconic in Geo- 

 logic Nomenclature. 



(C) Contributions from Miscellaneous Sources. 



IOWA ACiRICULTURAL COLLEGE, AMES. 



Bulletin, Department of Entomology, No. 2, 1884. 



MISSOURI AGRICULTURAL C0LLE(;E EXPERIMENT 



STATION, COLUMBIA. 



Bulletin, No. 25, April, 1894- 



MICHIGAN MINING SCHOOL, HOUGHTON. 



Report of the Directors and Treasurer, 1886-1891 . 



A paper on the Michigan Mining School, by M. E. Wadsworth. 



GEOLOGICAL SURVEY OF ARKANSAS, LITTLE ROCK. 



Annual Reports, John C. Branner, State Geologist, 1888, Vol. II ; 1890, Vols. 

 III-IV, with Atlas ; 1891, Vols. I-II ; 1892, Vols. I-II. 



MONTREAL HORTICULTURAL SOCIETY, MONTREAL. 



Seventh Report, 1881. 



SCIENTIFIC ALLIANCE OF NEW YORK, NEW YORK. 



Fourth Annual Directory, 1894. 



DEPARTMENT OF AGRICULTURE, OTTAWA. 



Central Experimental Farm, Bulletin, Nos. 11 and 14, 1891. 



