1880.] 



MICROSCOPICAL JOURNAL. 



179 



for the Soiree, which had to be cor- 

 rected in open meeting, but probably 

 misled some. Citizens told me that 

 jealousy was at the bottom of all this." 



We have been favored with one 

 of the incorrect reports, and are 

 assured that the indignant feeling 

 of our correspondent is fully justi- 

 fied. Those who desire to read the 

 best reports of the meeting that 

 were published in Detroit should ob- 

 tain copies of the Post and Tribune. 



We are perfectly well aware that 

 any words of ours will not materially 

 affect the circulation or the business 

 of the Free Press, but we owe a 

 duty to ourselves, and to the jour- 

 nalistic profession, to condemn 

 such disgraceful and contemptible 

 work on the part of any Editor. If 

 the Free Press will exercise such 

 unlicensed freedom in regard to the 

 work of a scientific organization, 

 simply on account of a personal 

 feeling of jealousy, what reliance 

 can be placed upon its news, either 

 of a political or a miscellaneous 

 character. 



No condemnation is too strong 

 for such a journal ; but the time has 

 not yet come when men will de- 

 mand the same accurate and un- 

 distorted information from their 

 daily newspaper, as they now re- 

 quire in the ordinary routine of 

 business. When that time does 

 come, the politics of the country 

 will be in a better condition than 

 they are now. 



CORRESPONDENCE. 



To THE Editor : — In reply to Mr. 

 Hull's inquiry about the proper kind of 

 glass for slides, I would say that my prac- 

 tice has been heretofore to go to hard- 

 ware stores and other places where glass 

 is sold, and where I generally find several 

 barrels full of glass-strips of varying 

 width and thickness, and from these I 

 have selected such as were fit for my 

 purpose. On making inquiries as to what 



kind of glass can be had in quantities, I 

 find that the kind used by picture framers 

 and called " French single thick," is well 

 adapted for slides. All of the panes are 

 not thin enough, but they are intended to 

 be about -^^ inch in thickness. Such glass 

 has a fine surface, is very clear and free 

 from imperfections. 



There is an American imitation of this 

 " French single thick," and from samples 

 shown me, I do not think there is much 

 choice between the two kinds. In choos- 

 ing, I should select those pieces which 

 look the whitest when held up edgewise 

 to the light, in preference to those that 

 are a deep green. The cost of this kind 

 is a Httle more than that of common win- 

 dow-glass. Very respectfully, 



F. M. Hamlin. 



To THE Editor : — In your July num- 

 ber, Mr. Hull writes to ask where he 

 can get thin glass for slides. I have 

 found that good French plate can be 

 had at a photographer's. By looking 

 through an assortment of photographic 

 plates, perhaps two in a dozen will be 

 found thin enough to cut into slides. Of 

 late I have obtained slides from a glazier 

 who keeps quite an assortment of fine plate 

 glass. A few moments rubbing on a 

 whetstone suffices to remove sharp corners 

 and leaves a sUde looking better, if it is cut 

 smoothly, than a more prolonged grinding. 



I wish to enquire how to get rid of air- 

 bubbles in using Deane's gelatin. No way 

 that I have tried suffices to avoid this 

 drawback in the use of this medium. 



F. H. 



NOTES. 



— We call attention to the business 

 change of the late firm of Sidle & Poalk, 

 the well-known manufacturers of the 

 "Acme " stand and the " Congress " turn- 

 table. The business of that firm is now 

 done by John W. Sidle & Co., of Lancas- 

 ter, Pa. The new firm has our best wishes 

 for success. 



— The first number of the second vol- 

 ume of The Valley Naturalist has lately 

 reached us. We doubt not that many of 

 the former subscribers to that periodical 

 will be glad to learn that it has been re- 

 vived by its former publisher, Mr. Henry 

 Skear, of St. Louis, Mo. 



The Editor states that " since the cir- 

 culation of our ' announcement ' in May 

 last, we have received upward of five- 

 hundred subscribers, thus insuring its sue- 



