4 PROCEEDINGS OF THE ACADEMY OF 



Rhoads, M. D., W. H. Trueman, D. D. S., James Truman, D. D. 

 S., Chas. Shaeffer, M. D, Henry C, Chapman, M. D., W. W. Keen, 

 M. D, W. Lehman Wells, M. D., T. H. Andrews, M. D, Geo. 

 Pepper, M. D., D. Murray Cheston, M. D., Horace Williams, M. D., 

 Herbert Norris, M. D., Chas. Bullock, W. L. McFadden, Joseph 

 Zentmaver, W. H. Walmsley, T. W. gtarr, Horace B. Hare, M. D., 

 Prof. Robt. E. Rogers, M. D., and F. F. Maury, M. D. 



The resignations of Messrs. McAllister, Atlee, Wilcocks and 

 Ziegler were read and accepted. 



Dr. J. H. McQuillen exhibited longitudinal and transverse sec- 

 tions, prepared by himself, illustrating the anatomy of the poison 

 fangs of the rattlesnake. The fangs were from the head of a rattle- 

 snake furnished to him by Dr. S. W. Mitchell. 



Biological Dejyai'tment, June 16fh, 1868. 

 Wm. Pepper, M. D., in the Chair, 



Twenty-five members present. 



Drs. J. L. LeConte, J. H. Packard and S. B. Howell were de- 

 clared members of the Department. 



The resignations of Mr. Constant Guillou and Drs. A. Hewson 

 and Henry Hartshorne were read and accepted. 



Dr. W. W. Keen exhibited some injected preparations mounted 

 in sections, by Prof. Thiersch of Leipzic. Some of these were mar- 

 vels of execution, more particularly as to the extent of the sections, 

 being those of an entire kidney of a cat and rabbit, and similarly 

 extensive tissues. They were mounted in balsam, and exhibited, for 

 the most part vascular arrangement only. 



At the election of officers this evening for the remainder of the 

 year 1868, the following were chosen: — 



Director, Wm. Pepper, M. D. 



Vice Director, J. Gibbons Hunt, M. D. 



Recorder, James Tyson, M. D. 



Corresponding Secretary, J. H. McQuillen, M. D, 



Conservator, Herbert Norris, M. D. 



Treasurer, C. N. Pierce, D. D. S. 



July 6th, 1868. 

 Director, Wm. Pepper, M. D., in the Cliair. 



Twenty-three members present. 



Dr. H. C.Wood exhibited a section through the root of the American 

 mistletoe, shoyv'mg the intimate conjunction of the woody tissue of the 

 parasite with that of its foster mother, as well as the distinctness of 

 the two, and remarked on the fact that the green leaved phanerogamic 

 parasite thus pierced into the region of the crude sap, while the 

 tawny, scale leaved, such as the beech drop, are only capable of nour- 

 ishing themselves with the elaborated sap, and that therefore they 

 merely pierced the bark of their victim, their roots ramifying through 

 the cambium layer. 



Dr. J. G. Hunt remarked : 



