THE AMERICAN 



MONTHLY 



MICROSCOPICAL JOURNAL, 



VOL. XIX. DECEMBER, 1898. NO. 12. 



Contents. 



Artificial Culture of Diatoms. Terry 209-212 



Photo-Micrograpliic Apparatus. Bitting 212-215 



Diagnosing Yellow Fever 215-217 



Fixing Blood for Microscopic Study 218-221 



PRACTrcAiv Suggestions.— Flagellum of Ceratium, Flagellum 

 of Bacteria, Fixing Objects, Blackening a Draw-tube, Prac- 

 tice, Musca Domestica 221-223 



Editorial. — Periodical, Cells, Diagnosing Diphtheria, Phyto- 



Plankton, Forest Leaves 223-224 



Science Gossip. — Decaying Pine Wood, Nucleo-albumin, Cir- 

 culation of Blood, Photo-micrography, Media for Micro- 

 organisms.. 224-227 



RECENT Publications. — New Book, Mushrooms, Tumor of 



the Jaw, AlgES, Double Man 227-228 



Miscellaneous — For Sale, Dulaiin Society, Hastemere So- 

 ciety, Personal 228 



An Episode in the Artificial Culture of Diatoms, 

 BY WILLIAM A. TERRY, 



BRISTOL, CONN. 



Late in August, 1895, I made a gathering of sediment 

 from the mai'gin of a pond in Bristol at an elevation of 

 some 800 feet. The water was low in the pond and had 

 left this sediment uncovered for some time. The previous 

 year I had made a similar gathering from the same place, 

 and, on stiring it up in water found it very rich in 

 desmids, numerous in variety and some of them very 

 rare. This gathering contained also numerous varieties 

 of desmids, but not in sufficient quantity to be easily 

 separated from the mud. It had also diatoms, particu- 

 larly Surirella biseriata, and, as I believed it contained 

 spores also I gave them a chance to develope. Stiring 

 it up in water, after the sand and coarse debris had set- 

 tled, I poured the lighter part into a glass dish about one 



