1851.] 



235 



July Ut, 1851. 

 Vice-President Bridges in the Chair. 



A letter was read from Thos. E. Yeateman, Esq., addressed to Geo. 

 W. Carpenter, dated St. Louis, June 16, 1851, in reference to a por- 

 trait of the late Dr. Gerard Troost, which he was about transmitting to 

 the Academy, as a donation from himself. 



Also, a letter from Mr. William Haidinger, dated Vienna, 6th June, 

 1851, acknowledging the receipt of his notice of election as a Corres- 

 pondent, and advising of the shipment of a present of books to the 

 Academy from himself and M. Hauer, and also the Year-book, sent 

 by the Royal Imperial Geological Institution of the Austrian Empire. 



Dr. Leidy stated that the Cicada septendecim, was subject to a fun- 

 gous disease. The posterior part of the abdomen he observed in seve- 

 ral instances to be filled with a mass of oval spore-like bodies, embos- 

 sed upon their surface, but becoming smooth from endosmosis when 

 placed in water. 



He also stated he had just received the dead larva of a lamellicorn 

 insect, which was filled with the same fungus which sometimes attacks 

 the mole cricket. 



July Sth. 



Vice-President Bridges in the Chair. n^^ 



Letters were read from the Linnean Society of London, dated Nov. 



7, 1850, and from Dr. F. H. Troschel, dated Bonn, 23d Jan., 1851, 



severally acknowledging the receipt of Nos. of the Proceedings of the 



Academy. 



July 1 5th. 

 Vice-President Bridges in the Chair. 



Mr. Vaux presented a paper, entitled " Descriptions of seventeen 

 new species of Crinoidea, from the Subcarboniferous Limestone of 

 Iowa and Illinois ; by D. D. Owen, M. D., and B. F. Shumard, M.D., 

 with a plate ;" which, being intended for publication in the Journal, 

 was referred to a committee, consisting of Dr. Leidy, Mr. I. Lea, and 

 Dr. Ruschenberger. 



A communication was read from the Imperial Society of Naturalists 

 of Moscow, advising of the transmission of recent Nos. of the Bulletin 

 of that Society. 



July 29tL 



Vice President Bridges in the Chair. 



The Committee to which was referred the paper of Drs. D. D. 



Owen and B. F. Shumard, describing new species of Crinoidea from 



Iowa and Illinois, reported in favor of publication in the Journal. 



On motion of Mr. Cassin, the privilege of endorsing tickets of 



admission to the Museum of the Academy, on Tuesdays and Fridays, 



and of issuing orders for the same purpose, was conferred on Mrs. 



TROCEED. ACAD. NAT. SCI. OF PHILADELPHIA. VOL. V. NO. X. 31 



