THE MICROSCOPE. 87 



The Microscope in Court — Wm. Schuur, Esq., Warren, Pa. 



Polyzoa of Local Waters— Prof. I). G. Kellicott, Buffalo, N. Y. 



Diatoms of Chemung Count}-, N. Y. — Dr. Thad. S. Up de 

 Graff, Elmira, N. Y. 



Report on the Society's Fasoldt Plates and on Micrometry — 

 Prof. F. C. Mendenhall, Columbus, Ohio. 



Microphotography by Lamplight — Wm. H.WalmsIey, Esq., Phil- 

 adelphia, Pa. 



Terminations of Nerves in the Liver — M. L. Holbrook, M. D., 

 New York City. 



A Basis of Natural Classification of Plants Founded upon the 

 Features of Their Seeds — Rev. J. T. Brownell, Pennsylvania. 



Papers, illustrations, etc. etc., are also expected from Dr. Geo. 

 E. Fell, Buffalo, N. Y.; Mr. Edward, Bausch, Prof. D. M. Kinsman, 

 Prof. Carl. Seller, Prof. A. H. Tuttle, Prof. Lester Curtis, Dr. N. G. 

 Byers, W. G. N.; Dr. Ephraim Cutter, John Phin, Esq., Prof. S. H. 

 Gage and others, so that there is a fair prospect of scientific plenty. 

 As to the local arrangements, Dr. Up de Graff, of the local commit- 

 tee, informs me he has written you, so I need not repeat. On this 

 head I will only say that I know the committee well, have tested 

 their hospitality before now, and, like Oliver Twist, am anxious for 

 more; but, unlike poor Oliver, there is no prospect of being sent 

 away dissatisfied. I feel sure that every member of the A. S. M. 

 who goes to Elmira in August will enjoy the meeting, and go home 

 with pleasant recollections of that handsome and hospitable city. 



Yours truly, 



Geo. E. Blackham. 



Drawing on Gelatine with the Camera Lucida. — M. 

 Creteur uses a metallic point for drawing objects with a camera 

 lucida, the drawing being made not on paper, but on a sheet of 

 gelatine laid on a dark ground. The shining point is always visible, 

 and is claimed to provide a remedy for the indistinctness of the 

 point of the pencil, which is the chief difficulty experienced in 

 drawing with the camera by the ordinary method. The drawing 

 can also be readily transferred to stone. 



It is questionable whether the advantage gained through the 

 greater distinctness of the drawing-point is not more than counter- 

 balanced by the disadvantage of not being able to draw on paper. 

 As the particular benefit claimed appears to rest upon the shining 

 point, that could be obtained without great difficulty with an ordi- 

 nary pencil. — Royal Alicroscopical Journal. 



