NATURAL SCIENCES OF PHILADELPHIA. 329 



July 13. 



The President, Dr. Ruschenberger, in the chair. 



Eighteen members present. 



A paper entitled " Fasti Ornithologke Redivivi, No. 1, Bar- 

 tram's Travels," by Elliott Coues, M.D., was presented for pub- 

 . lication. 



Pelvis of Hadrosaurus. Prof. B.- Waterhouse Hawkins re- 

 ferred to his remarks of last summer regarding the position of 

 the so-called clavicles of Hadrosaurus. Having drawn a figure 

 of the skeleton, he explained the impossibility of disposing of 

 those bones in the position of clavicles. A comparison of the 

 skeleton of Hadrosaurus with that of the Ostrich was made, and 

 the conclusion drawn that the ischiatic position assigned to the 

 bones in question in the restoration made for the Smithsonian 

 Institution was unwarranted. 



Prof. Cope stated that he had lately obtained a metatarsal bone 

 of Lselaps which confirmed the views of Prof. Hawkins as ex- 

 pressed in his restoration of that animal made during his engage- 

 ment at the Central Park, New York. 



July 20. 



The President, Dr. Ruschenberger, in the chair. 



Nineteen members present. 



Papers entitled " Report on the Reptiles brought by Prof. 

 James Orton from the Middle and Upper Amazon and Western 

 Peru," by Edw. D. Cope ; and " Note on the Ichthyology of 

 Lake Titicaca," by Edw. D. Cope, were presented for publication. 



Influence of Nutrition on Form. Mr. T. Meehan remarked 

 that the influence which nutrition, in its various phases, had on 

 the forms and characters of plants was an interesting study; and 

 in this connection he had placed on record in the Proceedings of 

 the Academy, that two species of Euphorbia, usually prostrate, 

 assumed an erect growth when their nutrition was interfered with, 

 by an JEcidium a small fungoid parasite. He had now to offer 

 a similar fact in connection with the common Purslane Portulaca 

 oleracea one of the most prostrate of all procumbent plants, 

 which, under similar circumstances, also became erect. 

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