52 JOURNAL OF THE [April, 



moved carefully with moist filtering paper, lest the varnish used 

 for sealing together the glasses peel off after a few years. Gly- 

 cerin jelly has not answered our expectations, since it renders the 

 specimens blurred. 



" For sealing I use nothing but asphalt dissolved in spirits of 

 turpentine. Although black and not looking handsome, this dries 

 within twenty-four hours, and keeps unchanged for a number of 

 years, provided that even the slightest film of glycerin has been 

 carefully removed "around the edges of the covering glass. Pretty 

 sealing, although very pleasant to the eye, I consider superflu- 

 ous.'^ 



OBJECTS EXHIBITED. 



1. Many pieces of apparatus explained in the paper as above : 

 by A. A. JuLiEN. 



2. Insect in amber : by F. D. Skeel. 



3. Sections of antenna of the Wasp, Vespa macidata L. : by L. 

 Riederer. 



4. Zentmayer Centennial Stand, with large aluminum stage 

 and certain improvements : by William Wales. 



PUBLICATIONS RECEIVED. 



The American Monthly Microscopical Journal : Vol. XIII., No. Ii — Vol. 

 XIV., No. I (November, 1892 — January, 1893). 



The Microscope : Vol. XII., No. 11— Vol. I., No. i (November, 1892 — 

 January, 1893). 



The Observer: Vol. III., No. 12— Vol. IV., No. 2 (December, 1S92— Feb- 

 ruary, 1893). 



The Botanical Gazette : Vol. XVII., No. 12 (December, 1892). 



Bulletin of the Torrey Botanical Club: Vol. XIX., No. 12 — Vol. XX., 

 No. I (December, 1892 — February, 1893). 



Insect Life : Vol. V., No. 3 (January, 1893). 



Psyche : Vol. VI., Nos. 201 — 203 (January — March, 1893). 



Anthony's Photographic Bulletin : Vol. XXIII., No. 23— Vol. XXIV., No. 

 4 (December 10, 1892 — February 25, 1893). 



Natural Science Association of Staten Island : Proceedings (November 12, 

 1892— February 18, 1893). 



School of Mines Quarterly : Vol. XIV., No. i (November, 1892). 



