THE AMERICAN 



MONTHLY 



MICROSCOPICAL JOURNAL 



Vol. XIII. SEPTEMBER, 1892. No. 9. 



CONTENTS. 



The Fifteenth Annual Meeting MiCROsconcAL Apparatus. — 



of the American Microscopi- Edinburgh Student's Micro- 



cal Society. — Smiley - - - 201 .-ri * <- jn 



•' scope (illustrated) - - - - 2ig 



The Leeuwenhoek Microscopi- i ,, -^ ^, ,.. 



^ Microscopical News. — The Mi- 



cal Club of Manchester, Eng. 



— Smiley ------- 210 



What is a Species in the Diato- 



macejE. — Edwards - - - - 212 

 Radiolaria : Their Life-Historj 



and Their Classification. — 



Carter -------- 216 



croscopic Determination of 



Rock-forming Minerals - - 220 

 Microscopical Societies. — 



San Francisco. London - - 221 

 New Publications. — Murtfeldt. 



Wood. Stephens - - - - 223 



The Fifteenth Annual Meeting of the American Microscopi- 

 cal Society. 



By ROBERT W. SMILEY, 



WASHINGTON, D. C. 



The American Microscopical Society, formerly the American 

 Society of Microscopists, held its fifteenth annual convention in 

 the city of Rochester, N. Y., August 9 to 12, inclusive. The 

 meetings were opened to the public and enough popular interest 

 was manifested to insure a goodly attendance. 



The opening meeting was held in Anderson Hall, on the Uni- 

 versity campus. 



The morning and afternoon sessions of the society were given 

 up to business and reading of papers, while the evenings were 

 devoted to the reading of the presidential address and various 

 social gatherings. 



The Delta Upsik>n chapter house, at the corner of University 

 avenue and Goodman street, w^s the headquarters of the society, 



