32« THE AMERICAN MONTHLY [Nov., 



stained Muo. In tlio contro of tlic red blood-oorpupclos was 

 fount! a oolloction of protoplasm stainrd faintly Init distinctly 

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

 a8 ISTSthat 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. \. M. Edwurds, we invite subscriptions to Bacill- 

 iaria*. 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 wlio 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 M^-eting 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 mo.st noted 

 microscopes and exi)lained 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." 



Octo6er 20, 1893.— Mr. Joseph Huber spoke on "Mounting 



