1884,] NATURAL SCIENCES OF PHILADELPHIA. 371 



Watson, R. Boog. MoUuscaof H. M. S. "Challenger" Expedition. Parts 

 17, 18 and 20. 1883. The Author. 



Weisbach, Albin. Synopsis mineralogica. II. Aufl., 18S4. 



I. V. Williamson Fund. 

 Weismann, Aug. Studies in the theory of descent. 2 vols., 1882. 



I. V. Williamson Fund. 



Wesleyan University. 12th annual report of the Curator of the Museum. 



1883. The Author. 



Whiteaves, J. F. Geol. and Nat. Hist. Surv. of Canada. Mesozoic Fossils 



I and III, pp. 1-238. Paleozoic Fossils, III. The Survey. 



Wilcox, Jos. Notes on the geology and natural history of the west coast 



of Florida, 1884. The Author. 



Williams, Albert. Mineral resources of the United States, 1883. 



Department of the Interior. 

 Willson, E. B. Memoir of John Lewis Russell, 1874. Es.>-ex Institute. 



WoUe, Francis. Desmids of the United States and list of American 

 Pediastrums, with 1100 illustrations. I. V. Williamson Fund. 



Women's Medical College of the New York Infirmary. Catalogue and 

 announcement. June, 1884. The College. 



Wood, Dr. H. C, and H. F. Formad. Memoir on the nature of diphtheria. 



The Authors. 

 Wood-Mason, J. Report on the tea-mite and the tea-bug of Asam. 1884. 



The Author. 

 Wright, H. Wyoming Historical and Geological Society. Circular of 

 Inquiry, 1883. The manuscripts of the Earl of Ashburnham. 



The Society. 

 Yale College. Catalogue of the officers and students, 1883-84. 



The College. 

 Yarrell, Wm. A history of British Birds. 4th ed. Parts 18-25, 



I. V. Williamson Fund. 

 Zincken, C. F. Die Fortschritte der Geologie der Tertiarkohle, Kreide- 

 kohle, Jurakohle und Triasekohle oder Erganzungen zu den Physio- 

 graphic der Braunkohle. Leipzig, 1878. The Author. 

 Zittel, Karl A. Handbuch der Palaeontologie. 2 Abth., 3 Lief., II, 3. 



I. V. Williamson Fund. 

 Zoological Society of London. List of the vertebrated animals now or 

 lately living in the Gardens. 8th edition, 1883. The Society. 



Zoologischen Garten zu Hamburg, Fuhrer durch den. 



Das Aquarium des Zool. Garten The Zoological Society of Hamburg. 



Zoologischen Station zu Neapel. Fauna und Flora des Golfes von Neapel 



und der Angrenzf nden Meeres Abschnitte. VII, IX and XI Monogr. 



1883-84. I. V. Williamson Fund. 



Journals and Periodicals. 



Altenburg. Mittheilungen aus dem Osterlande, n. f., 2er Bd. Catalog der 



Bibliothek. The Society. 



Amsterdam. K. Akademie van Wetenschappen. Verslagen en M»dedee- 



lingen. Afd. Letterkunde, II R., Deel 1-12. Afd. Naturkunde, II, 



R., Deel 18. 



Jaarboek, 1882. 



Processen-Verbaal, 1882-83. 



Verhandlingen. Afd. Naturk. Deel 23. Afd. Naturt . Deel 14. ' 



The Society. 

 Angers. Societe d' etudes scientifiques. 12e and 13e Annees. 

 Societe national d' Agriculture Sciences et Arts. 



Memoires. T. 24 and 25. The Society. 



Anvers. Societe de Geographic. Bulletin, IX, 1. The Society. 



