374 MINNESOTA BOTANICAL STUDIES. 



984. Nordstedt, C. F. 0. Einige Characeen-bestimmungen. 

 Hedwigia. 27:181. i pZ. 1888. 



From Cuba. 



. See Wittrock V. B. and Nordstedt, C, F. 0. 



985. Norris, W. Diatomaceous Earth from Santa Monica. 

 —(Am. Mo. Mic. Jour. 10:45. F1889.) 



Specimens exhibited before San Francisco Microscopical Society, 

 Oct. 24, 1888. 



986. . Photographs of Diatoms from Illinois and 



California.— (Am. Mo. Mic. Jour. 12:190. Agl89i.) 



Presented to San Francisco Microscopical Society at meeting of June 

 1, 1891. 



987. Northrop, J, I. and Northrop, Alice B. Plant Notes 

 from Tadousac and Temiscouata county, Canada. Bull. Torr. 

 Bot. Club. 17:27-32. 5F1890. 



Two species of Chara. 



988. Nott, E. 8. Cleaning Diatoms . Proc. Am. Soc. Mic. 

 11:149.— (Am. Mo. Mic. Jour. 11:31. F1890.) 



989. Oliver, F. >V. On the Obliteration of the Sieve-tubes 

 in Laminarieae. Ann, of Bot. 1:95-117. p?. ^, .9. N1887. 



Discussion of Nereocystis luetkeana and statement that it is found 

 on the northwest coast of North America. 



990. Olney, S. T. Algae Rhodiaceae. A List of Rhode 

 Island Algae. 1-13. 1871. Providence, R. I. — (The Lens. 

 1:129-135. 1872.) 



991. Oltmanns, F. Ueber einige parasitische Meeresalgen. 

 Bot. Ztg. 207-215. pi. 7. f. 1-10 16D1894. 



Describes Acrochaete parasitica as new. From Greenland. 



992. O'Meara, E. Notes on Bermuda Diatoms. — (Quart. 

 Jour. Mic. Sci. N. S. 14: 316. 1874.) 



Specimens shown at the Dublin Microscopical Club, Jan. 22, 1874. 



993. . Diatoms from a Fresh-water Deposit found in 



Vancouver's Island. — (Quart. Jour. Mic. Sci. N. S. 15:409, 

 1875.) 



Reported at Dublin Microscopical Club March 18, 1875. 



994. . New Aulacodiscus shown. — (Quart. Jour. Mic. 



Sci. N. S. 18:104. 1878.) 



Dublin Microscopical Society June 21, 1877. 



995. . Aulacodiscus sollitianus exhibited. — (Quart. 



Jour. Mic. Sci. N. S. 18: 105. 1878.) 



Dublin Microscopical Society July 19, 1877. 



996. . Diatoms from the Arctic Seas exhibited. 



(Quart. Jour. Mic. Sci. N. S. 18: 214. 1878.) 



