280 The Microscope, 



these, with the exception for the present of pure glycerin, which 

 demands almost immediate sealing. This sealing process will be 

 described in the nelt lesson, and later the most appropriate uses for 

 the different media will be given. 



EDITORIAL 



THE PITTSBUKG MEETING. 



'^kJUMERICALLY speaking, the Pittsburg meeting was not a 

 ■^ ^ great success. It is fortunate, however, that scientific activity 

 and work does not depend upon numbers; and in this respect the 

 session just closed compares more than favorably with those of past 

 years. The papers presented were of a high order, showing careful 

 work and real advance, and were listened to with interest. Prof. 

 Rogers' address was a masterly production, and cannot but reflect 

 great credit on the society as well as on its distinguished author. 

 While not strictly microscopical, the subject considered by Prof. 

 Rogers is so closely allied to this department of research, that it 

 will be read by all thoughtful persons with the keenest pleasure. 

 We regret that lack of space prevents our printing the entire address, 

 but as the second part deals almost wholly with the discussion of a 

 mathematical problem, we have decided to omit it. Many of the 

 papers read before the society, the titles of which appear in the 

 report, will appear in this journal previous to their publication in 

 the society's transactions. This will give the members who were 

 unable to be present in Pittsburg, an early opportunity to read 

 them, and many others who are not connected with the society 

 will be able to judge of the scientific work accomplished by it. 



Perhaps the most important feature of these gatherings is the 

 social element — worker meeting worker, becoming personally ac- 

 quainted with one another, and by the discussion of moot-points, and 

 the interchange of ideas, enlarging their experience and knowledge. 



This feeling of good fellowship may be found in all the acts of 

 the Society, and there is a noticeable absence of self-pushing and 

 wire-pulling, which is so distasteful to all true lovers of science. 

 The Iron City Microscopical Society deserves great credit, and cer 

 tainly have the warmest thanks of all present, for their hospitality 

 and generous eflPorts to make their visitors comfortable and enjoy the 

 occasion. Taking all in all, the Pittsburg meeting may be consid- 

 ered, scientifically, as the most important gathering of microscopists 

 yet held, and one of which the Association may well feel proud. 



