316 MINNESOTA BOTANICAL STUDIES. 



247. Chaloner, A. D. Infusoria. Proc. Phil. Acad. 1:169. 

 (3My.) ApMyl842. 



Inquiry concerning property of evolving oxygen gas under influence of 

 sun's rays. 



248. Chamberlain, C. W. Some of the organic Impurities 

 found in Drinking Waters. 5th Ann. Rep. Conn. St. Bd. Health 

 for 1882. 260-280. pi. 1, "2. 1883. 



Chapman, E. T.' See Wanklyn, J. A. and Chapman, 

 E. T. 



249. Chase, H. H. and Walker, W .C. On some new and 

 rare Diatoms. I. 2 pi. 1886. Utica, N. Y.— (Bot. Centralb. 

 32:97-98. 1887.) II and III. 1-12. 3 lil. 1887.— Daily News 

 Print, Flint, Mich. 1887.— (Jour. Roy. Mic. Soc. 1887:788. 

 01887.)— (Bot. Centralb. 33:130, 131. 1888.) 



Chase, H. H. See Thomas, B. W. and Chase, H. H. 



250. Cheesemau, E. L. An Alga in an Aquarium. With 

 note by the editor. Am. Mo. Mic. Jour. 4:41. Mrl883. 



251. . A growing Slide. Am. Mo. Mic. Jour. 6:53. 



Mrl885. 



252. Christian, T. Diatoms in Barbadoes Deposit. Am. 

 Mo. Mic. Jour. 4:179,180. S1883. 



253. . Photo-micrographs of a new Diatom — Melona- 



vicula marylandica. Am. Mo. Mic. Jour. 7:2L8. N1886. 



254. . New Diatomaceous Deposits. — (The Micro- 

 scope. 7:65-68. 6 f. Mrl887.) 



Extract from paper read before the Richmond Microscopical Society. 

 A number of forms from an artesian well at Cambridge, Maryland, 

 at a depth of 200 feet. 



255. Chute, K. Infusorial Earth. Ann. Rep. Bd. Regents. 

 Smiths. Inst. 1 866 : 46. 1872. 



Specimens from St. Anthony's Falls were added to the Museum. 



256. Clark, F.C. Red Snow. Am. Nat. 9: 129-135. Mrl875. 



257. Clark, Josepliine A. Card-Index of Genera, Species 

 and Varieties of Plants published siace 1885. Washington, D. 

 C, U. S. A. 1892—. 



Index of new species of algae. 



258. Clark, J. Catalogue of Flowering Plants and Ferns 

 observed in the vicinity of Cincinnati. Adopted and published 

 by the Western Academy of Natural Sciences. Cincinnati. 

 1-30. 1852. 



Ctiara flexilis included. 



