1890.] MICROSCOPICAL JOURNAL. 89 



societies, the Philosophical, the Anthropological, and the Biological. 

 So do many others of our Microscopical Society belong to one or more 

 of the five societies, such as Prof. Hitchcock, Dr. Thos. Taylor, Dr. 

 Acker, Dr. Reyburn, Mr. V. A. Moore, Dr. Lamb, Prof. Burgess, and 

 others. 



Perhaps, then, we are far along toward recognition, and need onh- to 

 make our work better known and to be patient. Of course we must 

 not allow our kind elders to keep us in Knickerbockers any longer than 

 they fit, and we suspect that they set terribly tight now. 



The American Association for the Advancement of Science recog- 

 nized microscopy as a branch of science over lo years ago, and made 

 it a section. Microscopy seems even then to have been a science. For 

 our own part we very much regret that the section was abandoned in 

 the interest of a separate national society. Tell us, gentlemen, who 

 organized the American Society of Microscopists, whether or not you 

 organized a Scientific Society, and, if so, what are the grounds and 

 proofs of your claim.? 



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Weir's Mounting Medium. — A monobromide compound has 

 been discovered for mounting diatoms, which will probably prove of 

 exceptional value It has none of the defects of the bromide of anti- 

 mony and glycerine compound. The latter is difficult to seal so as to 

 preserve the cement. This tolu and monobromide compound has an 

 index high enough for all ordinary mounts. Prof. Smith, of Hobart 

 College has given it a thorough trial, and says that it is the best me- 

 dium he knows for diatoms. The inventor most generously throws 

 open his knowledge for the use of all, and does not expect to reap any 

 pecuniary benefits from the sale of this medium. It is some trouble to 

 prepare this compound, and as the inventor does not expect to prepare 

 it for sale, we hope that the dealers in microscopical goods will at once 

 do so. 



Slides Received.— We return thanks to the donor for the follow- 

 ing interesting slides : Three specimens of fresh-water sponges, Car- 

 ter ius tzibispcrjfia, Meyenia phunosa var-palmeri^ and the robust 

 form of Spongilla lacustris. These slides present a beautiful appear- 

 ance and are equal to anything that we have yet seen. The cement 

 rings are of transparent colors and closely resemble bevelled glass. 

 Prepared by Prof. C. H. Rowley, Westford, Mass., in March, 1S90. 



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We also return thanks to the donor for the following interesting 

 specimen: Diatomaceous earth from Wyoming Territory, sent by Mr. 

 W. H. Bullard. St. Paul, Minn. 



Slides Received. — We desire to return thanks to the donor for the 

 following interesting slide: Surirella (Diatom), prepared by Mr. A. 

 F. Bartges, Akron, Ohio. 



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We also return thanks to the donor for the following interesting 

 slide: Polyzoa, prepared by Dr. J. D. King, Edgartown, Mass. 



