68 American Quarterly Microscopical Journal. 



Dr. Ward described Biscols' section cutter, which he praised 

 as being convenient, and made on a correct plan for such in- 

 struments. 



The last paper was by Dr. Wm. H. Atkinson, of New York, 



" ON EPITHELIUM." 



Mr. Hitchcock then introduced the following resolutions 

 which were carried unanimously : 



Resolved, that this Congress, representing the various microscopical 

 societies and microscopists of the country, recommend and adopt for 

 universal use, from this time forth, the i-ioo of a millimetre as our unit 

 of micrometr>'. 



Resolved, that we request each society of microscopists to formally 

 approve of our action in this matter, and that they also ask authors 

 of papers to conform to these resolutions whenever practicable, and 

 that they communicate whatever action they may take to the New 

 York Microscopical Society. 



Resolved, that we request microscopical organizations of all countries 

 to formally adopt the same unit, and communicate their action to the 

 same body. 



Resolved, that we recommend the plan of Prof. W. A. Rogers for 

 deciding upon a standard micrometric division to the favorable consid- 

 eration of the societies. 



After all further business had been disposed of, Dr. Atkin- 

 son arose to ask if any person present desired " to know what 

 Epithelism is ?" As there was no immediate response the Con- 

 gress adjourned at about 5 o'clock. 



A report of this Congress would not be complete without 

 some notice of the instruments and accessories exhibited. We 

 can only notice a few. Dr. R. H. Ward had one of Prof. 

 Rogers's micrometers, the divisions of which were true fractions 

 of an inch, and offered it to all who wished to compare their 

 micrometers with it. He had also some of Mr. Fasault's fine 

 ruled plates. 



Mr. W. H. Walmsley, of Philadelphia, exhibited the largest 

 stock of any dealer. A fine lot of Beck's instruments, objectives 

 and accessories, Dr. Seller's very admirable section cutter, and 

 also Rivet's wooden microtome, which is so highly spoken of 

 for cutting sections of vegetable tissues. Mr. Walmsley de- 

 serves much credit for his enterprise and energy in trans- 

 porting so much expensive and delicate apparatus to such a 

 distance for this meeting. 



