NATURAL SCIENCE OF PHILADELPHIA. 349 



new Species of Serpents, in the Collection of the Northwestern University of 

 EvanStown, 111." 



By Isaac Lea, LLD., eight, to wit: "Description of eight new Species of 

 Unionidae, from Georgia." "Description of twenty-one new Species of Exotic 

 Unionidae." "Description of two new Species of Unionidae, from Georgia." 

 "Description of seven new Species of Uniones." " New Unionidae, of the United 

 States." "Description of twelve new Species of Uniones, from Georgia." 

 " Description of four new Species of exotic Unionidae.-' "Description of a new 

 Species of Unio, from the Isthmus of Darien." 



By John Le C'onte, three, to wit: "Description of two new Species of Tor- 

 toise*" " Observations on the Species of Nicotiana." " Descriptions of new 

 Species of the Coleopterous Family Histeridae." 



By John L. Le Conte, M. D., two, to wit: "Catalogue of Coleoptera, of Fort 

 Tejon, Gal." "Additions to the Coleopterous Fauna of Northern California and 

 Oregon." 



By Joseph Leidy, M. D., "On the seat of the vesicating principle of the Lytta 

 vittata,">read before the Biological Department. 



By F. B Meek and F. V. Hayden, M. D., two, to wit : " Remarks on the lower 

 cretaceous Beds of Kansas and Nebraska, with descriptions of some rare Species 

 of carboniferous Fossils from the Valley of the Kansas River." "Geological 

 Explorations in Kansas Territory." 



By. S. W. Mitchell, M.'D., two, to wit : ".Observations on the exposed Hearts 

 of Animals," and " On the production of Cataract in Frogs by the injection of 

 large doses of Sugar." Read before the Biological Department. 



By S. W. Mitchell, M. D., and W.'A. Hammond, M. D., two, to wit : "On 

 two new varieties of Woorara, Coroval and Vao," and "An experimental Ex- 

 amination of the Physiological Effects of Sassy Bark, the ordeal Poison of the 

 Western Coast of Africa," read before the Biological Department. 



By James .Aitken Meigs, M. D., "Description of a deformed, fragmentary 

 human Skull, found in an ancient quarry cave at Jerusalem, with an attempt 

 to determine by its configuration alone the Ethnical type to which it belongs." 



By R. Von Ostensacken, " New Genera and Species of North American Tipuli, 

 with sho/t Palpi, with an attempt at a new classification of the Tribe." 



By J. H. Packard, M. D., " The pathological Relations of Cancer and Tuber- 

 cle," read before the Biological Department. 



By H. D. Schmidt, M. D., "An Abstract of the most important Points of Re- 

 searches on the minute Anatomy of the Human Liver," read before the Biolo- 

 gical Department. 



By Win. Stimpson, " Prodromus Descriptions Animalium evertebratorum 

 quae in Expeditione ad Oceanum Pacificum septentrionalem, a Republica Fede- 

 rata missa, Cadwaladaro Ringgold et Johanne Rogers ducibus, observavit et 

 descripsit W. Stimpson. Pars septa, Crustacea Anomoura." 



By Wm. J. Taylor, " Minerological Notes," No. II. 



By J. J. Woodward, M. D, "On Suppuration in Cancerous Growths," read 

 before the Biological Department. 



By John Xantus, two, to wit : " Catalogue of Birds collected in the vicinity 

 of Fort Tejon, Cal., with a description of a hew Species of Syrnium." "De- 

 scriptions of new Species of Birds from Cape San Lucas, Lower California." 



In all sixty-two papers. 



During the same period the By-Laws have been amended as follows : 



Art. VI. of Chapter V., altered to read thus : 



The duty of the Librarian shall be to attend daily at the hall, at such hours 

 as may be deemed expedient by \he Library Committee, to take charge of all 

 books belonging to the Academy, under the rules prescribed in Chapter VII., 

 to keep a correct list of all donations or deposits of books, of those missing, 

 and to report on the state of the Library at the last Stated Meeting in Decem- 

 ber. 



Art. VIII. of the same chapter was repealed. 



IS 59. J 



