534 
ADDITIONS TO LIBRARY. 
Sowerby’s Malacological and Conchological Magazine. Parts 1-2. London. 
Rathmell Wilson. 
Sowerby, G. B. Thesaurus Conchyliorum. Parts 31 and 32. Mitra. Pur¬ 
chased. 
Spinelli’s Molluschi della Provincia Bresciana. 2d ed. Rathmell Wilson. 
Spottiswoode, Wm. Polarization of Light. London. Purchased. 
Stabile’s Fauna Elvetica. Rathmell Wilson. 
Stahlberger, E. Die Ebbe und Fluth in der Rhede von Fiume. Buda Pest. 
' Hung. Nat. Hist. Soc. 
Stein’s Infusiensthiere. 1 Abth. Rathmell Wilson. 
Stokley, W. S. 3d Annual Message of Wm. S. Stokley, Mayor of the City 
of Philadelphia, with accompanying documents. June 24,1875. Phila¬ 
delphia. From the City. 
Sullivant, William S. leones Muscorum. Supplement (Posthumous). Cam¬ 
bridge. Purchased. 
Strecker, Herman. Lepidoptera, Rhopaloceres and Heteroceres. No. 12. 
Reading, Pa. The Author. 
Strasburger, Dr. Edward. Ueber Zellbildung und Zelltheilung. Jena, 1875. 
I. Y. Williamson Fund. 
Sumichrast, Fr. Coup d’OEil sur la Distribution g6ographique des Reptiles 
au Mexique. The Author. 
Theobald’s Catalogue of Shells of Hindostan. Rathmell Wilson. 
Thomson, J. The Straits of Malacca, Indo-China, and China. New York. 
Purchased. 
Trafford, F. W. C. Amphiorama, ou la Yue du Monde des Montagues de la 
Spezia. The Author. 
Amphiorama, ou la Yue du Monde. 2e Notice. Zurich, 1875. The 
Author. 
Tyndall, John. Sound. 3d edition. 
Six Lectures on Light. Delivered in America in 1872-73. 2d edition. 
London. I. Y. Williamson Fund. 
Yan Beneden and Gervais, MM. Osteographie des C6tac6s vivants et fos- 
siles. Text and plates. Liv. 12 and 13. Paris. Wilson Fund. 
Yan der Hoeven, J. Catalogue de la Celhbre Collection de Cranes prove- 
nant de Feu. Leiden, 1875. 
Yon Mohl, Hugo. Botanische Zeitung, herausgegeben von Hugo Yon Mohl 
und D. F. L. Yon Schlechtendal. Her Jahrg. 1853. Berlin., Chas. 
F. Parker. 
Yan Yollenhoren S. C. Snellen, Pinacographie. I. S’Gravenhage, 1875. 
Wilson Fund. 
Yeslengius Joannas, De Plantes Agyptiis Patarii, 1638. S. S. Haldeman. 
Yilla’s Dispositio Conchyliarum. Rathmell Wilson. 
Waller, Horace. The Last Journals of David Livingstone in Central Africa. 
New York. Purchased. 
Warren, G. K. An Essay concerning important physical features exhibited 
in the Yalley of the Minnesota River and upon their significance. 
From the Engineer Department. 
Preliminary Report of Explorations in Nebraska and Dakota, in the 
years 1855-56-57. Reprint. Washington, 1875. Engineer Depart¬ 
ment. 
Wattel, C. R. De l’Utilit6 d’lntroduire la Sericulture & la Nouvelle-Cal6- 
donie. The Author. 
Wetherby, A. G. Description of Lepidopterous Larvae. The Author. 
Wheatley’s Shells of the United States. Wilson Library. 
