28 THE AMERICAN MONTHLY [Jan 



meagre integument which means a meagre store of food 

 immediately at hand." 



MICROSCOPICAL SOCIETIES. 



Washington. — On Tuesday evening, Nov. 21, officers 

 were elected for 1899-1900: President, Prof. Paul Bartsch ; 

 Vice President, Dr. Rupert Norton ; Recording secretary 

 L. M. Moore ; Treasurer, Dr. Robert Reyburn ; Curator, 

 "W. H. Seaman. A paper was presented on "Medicine 

 Droppers and Measurement of Drops." The society meets 

 at 714 Thirteenth street on the second Tuesday of each 

 month except in summer. 



Royal Microscopical Society. — The President called at- 

 tention to an old microscope made by Cary, presented to 

 the Society by Mr. Gleadow, which was a very interesting 

 addition to the Society's collection. An instrument of the 

 same design was figured in the Journal for 1898, p. 474. 

 Messrs. Watson and Sons exhibited their new School mi- 

 croscope, which was provided with a diagonal rack-and-pin- 

 ion coarse adjustment, but no fine adjustment ; their idea 

 being to produce a strong well-made instrument at a low 

 price. Dr. Dallinger had seen this instrument, .nd thought 

 it would admirably answer the purpose for which it was in- 

 tended ; the coarse adjustment was so well made that he 

 had no difficulty in focussing a >^in. objective with it. The 

 President also thought the microscope was strongly made 

 and well fitted, and would be found to be a very useful in- 

 strument. Messrs. Watson also exhibited a new form of 

 eyepiece named the "Holoscopic" which was fitted with an 

 adjustment to render it either over-or-under-corrected, and 

 suitable for use with either achromatic or apochromatic ob- 

 jectives. Dr. Measures exhibited a microscope for photo- 

 micrography made by Zeiss, having a new form of fine ad- 

 justment which admitted of the arm being made of any 

 length without throwing extra weight upon the fine-adjust- 

 ment screw. Dr. Dallinger considered the way in which 

 the speed of the fine adjustment had been reduced was 



