4 PROCEEDINGS OF THE ACADEMY OF 



linseed oil to bring the mixture to the consistence of cream. If it dries too 

 quickly on the brush to work smoothly, add a small quantity of oil of turpen- 

 tine. Occasionally stir the mixture before using. This cement dries very 

 quickly and retains a fine polish, does not become brittle, and will not ruia in 

 under the thin glass cover If proper care be used, all ordinary danger from 

 leaking when objects are mounted in cells, can be obviated. It may be color- 

 ed if desirable. 



An impression prevailed with some members that this was the form 

 of cement recommended by Dr. H. C. Bastian, in No. II of the new 

 "Monthly Microscopical Journal," of London, a cement much 

 used in Germany. With this cement, however, composed of solu- 

 tion of gum-mastic in chloroform, thickened with nitrate of bismuth, 

 Dr. Hunt was familiar, and having used it, finds it far inferior to 

 that made according to the formula furnished by him this evening. 



Mr. Walmsley had used these cements, and accorded the supe- 

 riority to that of Dr. Hunt. 



3Iay Zd. 

 Director S. W. Mitchell, M. D., in the Chair. 

 Twenty-six members present. 



Dr. J. G. Richardson read a paper " On the detection of red and white blood 

 corpuscles in Blood titains," with experiments to prove that the colorless ma- 

 terial left after the action of pure water on dried blood clot is not simply 

 fibrous, as appears to have been hitherto supposed by Robin, Virchow, Flem- 

 ing and other authorities, but chiefly an aggregation of those external portions 

 of innumerable corpuscles, which probably correspond to and certainly con- 

 stitute their cell walls. 



For paper, see Am. Jour. Med. Sciences, July, 18G9. 



Dr. William Pepper presented a specimen of a small pedicellated cystic 

 body, attached near the free end of the right fallopian tube. This little cyst 

 is described by Virchow under the name of the " terminal hydatid :" it is a 

 normal, but by no means constant structure, and is thehomologue of the vesi- 

 cle of Morgagni, which appears as an appendix to the head of the epididymis. 



The specimen was obtained from a young woman who died from ura>mia, 

 following granular degeneration of the kidneys. She is not known ever to have 

 presented any disturbance of menstruation. 



Dr. H. C. Wood exhibited specimens of an undescribed species of (Edocjonium, 

 which he named 0. niirubile, Spiror/yrn Weheri and S. qiiinina, not previously 

 found in North America, and found by him in the vicinity of Philadelphia. 



May nth. 

 Vice-Director W. Pepper, M. D., in the Chair. 

 Thirty members present. 



June 1th. 

 Director S. W. Mitchell, M. D., in the Chair. 

 Twenty members present. 

 The following pajDer was read and ordered to be published 



