ADDITIONS TO LIBRARY. 
531 
Paetel, Fr. Die bisher veroffentlichen Familien und Gattungsnaraen der 
Mollusken. Berlin. 1875. I. Y. Williamson Fund. 
Paleoutologie Frangaise, 25 duplicate numbers. Rathmell Wilson. 
Same, le serie, Animaux Invert. Ter. Juras. Liv. 29 and 30, 2e. 
Yegetaux, Ter. Juras. Liv. 8 and 9. Wilson Fund. 
Parker. W. K. On the Structure and Development of the Skull in the 
Pig (Sus scrofa.) The Author. 
Parkinson’s Organic Remains. 3 Yols. Rathmell Wilson. 
Peabody, Alfred. Early Yoyages to California. Henry Wheatland. 
Pfeffer, Dr. W. Die Periodischen Bewegangen der Blatt-organe. Leipzig, 
1875. Purchased. 
Pfeiffer, Dr. Louis. Novitates conchologicae. 46, 47, Lief. Cassel. Wil¬ 
son Fund. 
Monographia Heliceorum viventium. Yols. I.-IY. Mon. Pneumo 
napomorum viventium. 1 Yol. and Sup. 1 and 2. Yol. 7, Fasc. I., 
II. Lipsiae. R. Wilson, and Williamson Fund. 
Nomenclator botanicus. Conscripsit Ludovicus Pfeiffer. Yol. I. 
Fasc. 25, 27, 28, 29. Yol. II. Fasc. 25, 27. Cassellis, 1872. Yol. 
I. Fasc. 46. Yol. II. Fasc. 46. Purchased. 
Philippi’s Fauna Molluscorum Regni utriusque Siciliae. Rathmell Wilson. 
Phipson, Dr. T. L. The Utilization of Minute Life. London, 1864. I. Y. 
Williamson Fund. 
Photograph of Indian Skeletons exhumed at Marblehead, Nov. 10 and 11, 
1874. Henry Wheatland. 
Pinart, Alph. L. Yoyages a la C6tfe Nord-Ouest de l'Am6rique, executes 
durant les ann§es 1870-72. Yol. I. Partie I. (Hist. Naturelle.) 
Paris, 1875. I. Y. Williamson Fund. 
Plancus’ De Conchis Minus Notis, 1739. Rathmell Wilson. 
Plateau, Felix. Notice sur Charles Poelman. Brussels, 1875. The 
Author. 
Recherches sur les Phenomhnes de la Digestion chez Insectes. Bruxelles, 
1874. The Author. 
Plues, Margaret. British Grasses. 1867. I. Y. Williamson Fund. 
Poey, Felipe. Poissons de l’lle de Cuba. Especes Nouvelles. Salem. 
The Author. 
Poggendorflf’s Biographisch-Literarisches Handworterbuch. Lief 1-6. 
Rathmell Wilson. 
Poro’s Malacologia della Provencia Comasca. Rathmell Wilson. 
Potiez aud Michaud’s Gallerie des Mollusques. Yols. 1 and 2, and Atlas. 
Rathmell Wilson. 
Powell, M. Explorations of the Colorado River of the West and its tribu¬ 
taries, explored in 1869, 70, 71, and 72, under the direction of the 
Smithsonian Institution. Washington, 1875. Dep. of Interior. 
Prestwich, Joseph. The Past and the Future of Geology. London, 1875. 
I. Y. Williamson Fund. 
Pringsheim, Dr. N. Jahrbucher fur wissenschaftlichen Botanik. lOer 
Band, ler Heft. Leipzig. 2er Heft. Purchased. 
Proctor, Richard. Transits of Yenus. New York. Purchased. 
Proceedings at the Laying of the Corner Stone of the New Public Build¬ 
ings on Penn Square. 1874. Building Commission. 
Putnam, F. W. On some of the Habits of the Blind Crawfish, Cambarus 
pellucidus, and the reproduction of lost parts. The Author. 
Archaeological Researches in Kentucky and Indiana. 1874. The Author. 
Puton’s Mollusques des Yosges. Rathmell Wilson. 
Rarabosson, J. Astronomy. Translated by C. B. Pitman. New York. 
Purchased. 
