322 MINNESOTA BOTANICAL STUDIES. 



380. Cuiiiiiiigliam, K. M. Studies in the Biology of the 

 Diatoms. Am. Mo. Mic. Jour. 15: 193-207. J11894. 



331. . The Diatom considered as a Protozoan, with 



method of Demonstration. Am. Mo. Mic. Jour. 15:228-242. 

 Agl894. 



332. . A reply to Dr. Alfred C. Stokes' Critical 



Communication, headed "A Note incidently in regard to the 

 Animality of the Diatom, but especially to Mr. Cunningham's 

 Method of Illumination." The Microscope. (Smiley.) N. S. 

 2:185-187. D1894. 



333. Curtis, G. B. On Cleaning and Mounting the Diato- 

 maceae. Mic. Bull. 12. 1890— (Nuova Notarisia. 52. 1890.) 



334. Curtiss, G. L. Diatoms of the Waters of Indiana. 12th 

 Ann. Rep. Ind. Dept. Geol. Nat. Hist. 377-384. pi. 33-38. 1883. 



Figures numerous species and names most of them. 



335. Cutter, E. On the Presence of the Forms of Life in 

 the Central and Lateral surface Waters of Lakes and Ponds. 

 Am. Mo. Mic. Jour. 1:186-188. O1880. 



336. Dall, W. H. Arctic Marine Vegetation. Nature. 

 12:166. 1J11875. 



337. Dallinger, W. H. On " Navicula crassinervis, Frus- 

 tulia saxonica," and Navicula rhomboides, as Test Objects. 

 (Mo. Mic. Jour. 17:1-7. pi. 165, 166. 1 Jal877. ) 



Rear! before the Royal Microscopical Society Dec. 6, 1876. 



338. . Additional Note on the Identity of Navicula 



crassinervis, Frustulia saxonica, and N. rhomboides. — (Mo. 

 Mic. Jour. 17: 173-178. pi. 176. lApl877.) 



Read before the Royal Microscopical Society March 7, 1877. 



339. Dame, L. L. and Collins, F. S. Flora of Middlesex 

 county, Massachusetts. 1-181. (151-165). 1888.— (Bot. Gaz. 

 13:278. 01888.) 



Eleven species of Characeae and 204 species of other algae listed. 



340. Daua, J. 1). On American Geological History. Am. 

 Jour. Sci. Arts. ir. 22:305-349. N1856.— (Can. Nat. and Geol. 

 1:395-400. (Agl855.) D1856. 1:401-430. Jal857.) 



Considers the Age of Algae to correspond to the Silurian and Devo- 

 nian times. 



341. Djiubree, A. Deep sea Deposits. Jour, des Savants. 

 733-743. D1892. 37-54. Jal893.— (Ann. Rep. Bd. Regents 

 Smiths. Inst. 1893:345-566. (J11893. ) 1894.) 



Statement made that Diatoms abound toward the polar regions. 



