i 



1881.] ADDITIONS TO THE LIBRARY. 519 



Schoneburgh, R. Report on the progress and condition of the Botanic Garden 

 and Government Plantation, Adelaide, during the year 1880. The 

 Author. 

 Schufeldt, R. W. Osteology of Speotyto cunicularia, var. hypogsea and of 



Eremophila alpestris. The Author. 

 Scudder, S. H. Structure and affinities of Euphorbia Meek and Worthen. 

 Problems in entomology. 



The tertiary lake basin of Florissant, Colorado. ' 



List of orthoptera collected by Dr. A. S. Packard, Jr., in the western 

 United States in the summer of 1877. The Author. 

 Second Geological Survey of Pennsylvania, reports. A', G,* G^, H^, H^, I^, M^, 



P, Q*, R and T. Appendiz A to report R. The Survey. 

 Second Yarkand Mission, scientific results of. Rhynchota, by W. L. Distant; 

 SyringosphseridiE, by Prof. P. Martin Duncan ; Lepidoptera, by Fred- 

 eric Moore ; Mammalia, by W. T. Blanford. East India Government. 

 Sequin, Aine, M. Causes et effets de la chaleur de la lumiere et de I'^lectricite. 

 Les lois qui president a I'accomplissement des phenomfenes naturels 



rapport6s a I'attraction Newtonienne. 

 L'origine et la propagation de la force. Considerations sur les causes de la 



cohesion. 

 Reflexions sur I'hypothese de Laplace. Dr. F. V. Hayden. 

 Semper C. Reisen im Archipel der Philippinen. 2er Th. 2er Bd. Supple- 

 ment-Heft I. Wilson Fund. 

 Sheafer, P. W. Geology of Schuylkill County. The Author. 

 Shepard, C. U. Treatise on Mineralogy. I. V. Williamson Fund. 

 Silliman, B. Mineralogical Notes. 1. Vanadinite, etc., from Arizona. The 



Author. 

 Slagg, J. French trade and tarifs. Cobden Club. 

 Smith, E. A. Geological Survey of Alabama, reports 1875, 1877 and 1878, 



1879 and 1880. -The Author. 

 Smith, Greene. Catalogue of birds, eggs and nests, 1880. The Author. 

 Smith, J. A. Biennial report of the State Geologist of the State of Colorado, 



for the term ending Dec. 3, 1880. The Author. 

 Smithsonian Institution. Contributions to Knowledge. Vol. 23. 

 Miscellaneous collections. Vols. 18, 19, 20, 21. 

 Annual report, 1879. The Institution. 

 Smucker, I. Mound-builders' works near Newark, Ohio. The Author. 

 Sowerby, G. B. Thesaurus Conchyliorum. Pts. 35 and 36. Wilson Fund. 

 Speyer, 0. Die Conchylien der Casseler Tertiiirbildungen. 1-6 Lief. Joseph 



Jeanes. 

 State Commissioners of Fisheries, Pennsylvania, reports 1879 and 1880. B. 



L. Hewit. 

 State Fish Commission of Iowa. lst-3d biennial reports. The Commissioners. 

 State Geologist of Colorado. Biennial report, Dec. 31, 1880. The Author. 

 Stearns, R. E. C, Observations on Planorbis. 

 On Helix aspersa in California. 

 Mya arenaria in San Francisco Bay. 



New species of marine mollusks from the coast of Florida. The Author. 

 Steenstrup, J. Prof. A. E. Verrila to nye Cephalopodslaegter, Sthenoteuthis 

 og Lestoteuthis. 

 Sepiadarium og Idiosepius to nye Slsegter af Sepiernes Familie. The 

 Author. 

 Stoppani, A. e G. Negri. Carattere marine dei grande amfiteatri Morenici 



deir alta Italia. A. Stoppani. 

 Struckmann, C, Geognostische Studien am Deister. II. 1880. The Author. 

 Sveriges Geologiska Undersokning. 8vo, Ser. Aa Nos. 73-79 ; Ser. Ab, No. 

 6. Ser. C, Nos. 36-41 (42, 4to), 43 and 44. 4to. Ser. C, 42. Six maps. 

 The Survey. 



