i885.J 



MICKOSCOPICAL JOURNAL. 



175 



EDITORIAL. 



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Vol. V {1884), Nos. 2-12, $1.00. 



American Association. — Our 

 columns are so fully occupied this 

 month that only brief mention can be 

 made of the proceedings at Ann Ar- 

 bor, and this must be confined to the 

 microsopical section, although in the 

 section of biology many important 

 articles were read. 



Prof. S. H. Gage was presiding 

 officer of the section of Histology and 

 Microscopy ; Mr. W. H. Walmsley, 

 secretary. Mr. Walmsley read an ar- 

 ticle on ' Photo-micrographs on gela- 

 tin plates for lantern projection,' and 

 gave a practical demonstration of 

 photo-micrography by lamp light. 



Prof. Burrill presented a communi- 

 cation on ' Photo-micrography with 

 high powers.' Mr. Chas. Porter Hart 

 described 'A new, cheap, useful, and 

 quickly constructed microtome,' and 

 Dr. H. G. Beyer read an article bv 

 the editor of this journal, which is 

 published on another page. 



The address of Prof. J. P. Leslie, 

 the retiring President of the Associa- 

 tion, deserves careful reading. It is 

 published in Science of August 28th. 

 — o 



American Society of Micro- 

 scopiSTS. — The success of the meet- 

 ing at Cleveland must be judged from 

 the condensed account of the pro- 

 ceedings, which will be completed 

 next month. These, although mainly 

 taken from the newspaper reports, 

 bear the stamp of careftil preparation, 



and we must express our apprecia- 

 tion q{ the excellent character of the 

 reports in the Plain Dealer ^ which 

 i are much better than the accounts of 

 I scientific meetings in the daily papers 

 I usually are. 



I There is no doubt all who attended 

 { the meeting were well pleased. Per- 

 sonally we are. and have been since 

 the beginning, especially interested 

 in the * working session.' In spite of 

 some trifling misunderstanding be- 

 tween a few members last year, which 

 it was thought might injuriously aflect 

 the operations at Cleveland . Mr. Vorce 

 has had a j:horoughly successful work- 

 ing session, which is largely due to 

 the energy and hard work he has 

 given to it. We are pleased to notice 

 that next year Mr. Griffith, who has 

 done so much to establish the work- 

 ing session, will again have charge 

 of it. 



Prof. Kellicott is already at work 

 on the Proceedings, which will proba- 

 bly be published at an early day. 



We publish this month some of the 



important papers read at the meeting 



and others will be printed next month. 



The meeting next year will be held 



at Chautauqua. 



o 



Cheese Poison. — It will be re- 

 membered that some tiine ago consid- 

 erable was said in the newspapers 

 about some cheese which was said to 

 be poisonous, in Michigan. At the 

 time aniumber of chemists and micro- 

 scopists examined specimens of the 

 cheese, among others Dr. Sternberg, 

 who was looking for the bacteria. . Dr. 

 V. C. Vaughn recently read a paper 

 giving an account of his researches 

 on this subject before a meeting of the 

 Michigan Board of Health, an ab- 

 stract of which we have received. 



Dr. Vaughn finds that a poison, 

 which he names tyrotoxicon, is pro- 

 duced in cheese under certain condi- 

 tions, and he has succeeded in isolat- 

 ing it in the form of crystals. It is 

 supposed that the poison is produced 

 by putrefactive changes, and it may 

 therefore prove to be a product of bac- 



