32f5 THE AMERICAN MONTHLY [Nov., 



stained blue. In the centre of the red blood-corpuscles was 

 found a collection of protoplasm stained faintly but distinctly 

 from the rest of the cell. Dr. Stowell was of opinion as far back 

 as 1878 that the red blood-corpuscle had some body within it 

 which was not unlike the nucleus of other cells. This he de- 

 monstrated by staining with a solution of eosin. The eosin 

 stains the nucleus intensely red, while the remainder of the 

 corpuscle is stained only slightly. 



DIATOMS. 



A New Book on Diatoms Proposed. — By request of the 

 author, Dr. A. M. Edwards, we invite subscriptions to Bacill- 

 iariae. It will contain a popular account of Diatoms in general 

 and the mode of collecting and cleaning their shells. Illustra- 

 ted, 100 pp. Price $3. Club rates to our subscribers $2.75. 

 From this price a further allowance of 25 cents will be made to 

 those who subscribe during December, payment to be made on 

 publication of the volume. 



MICROSCOPICAL SOCIETIES, 



Essex County Society, — Montclair, N. J. 



October 19, 1893. — The Annual Mpetin^ was held at the resi- 

 dence of the Secretary, 88 Mountain Avenue, Montclair, N. J. 

 The Officers elected for 1893-'94 were: Edward H.Hamill, M. D., 

 of Newark, N. J., President ; Frank Vanderpoel of Newark, 

 N. J., Vice-President ; Rev. F. B. Carter, of Montclair, N. J., 

 Treasurer; C. M. Marvin, of Montclair, N. J., Secretary; Dr. 

 Geo. S. Allan of Montclair, N. J., on the Executive Committee. 

 Peoria Scientific Association, 111. 



October 13, 1893. — The association met in the Court House. 

 Harold Plowe spoke upon, " the Mechanism of the Microscope," 

 and presented lantern illustrations. He showed the most noted 

 microscopes and explained their mechanism. He also gave a 

 display of slides some of the objects thrown on the screen being 

 magnified, says a local paper, to " Many million times their act- 

 ual size." 



October 20, 1893. — Mr. Joseph Huber spoke on " Mounting 



