350 . MINNESOTA BOTANICAL STUDIES. 



686. Hitchcock, C . H . On Mounting certain Diatoms. Am. 

 Mo. Mic. Jour. 7:148, 149. Agl886.— (Jour. Roy. Mic. Soc. II. 

 6:1079. 1886.) 



687. . . Resolution of Pearls of Aaiphipleura. Am. 



Mo. Mic. Joik. j8: 105, 106. Jel887. 



688. . Reminiscences and Notes on recent Progress. 



Am. Mo. Mic. Jour. 8:205-207. Ni887. 



Kefers to the author's observations upon the development of Ulothrix 

 from Pleurococcus described in the American Monthly Microscopi- 

 calJournal. 4:191. 01883. 



689. . Diatoms from New Localities. Am. Mo. Mic. 



Jour. 13:42, 43. F1892. 



Mention of New York and Alabama Forms. 



690. . Notice of Rev. Francis Wolle. Am. Mo. Mic. 



Jour. 14:181, 182. J11893. (With frontispiece.) 



691. Hobby C. 31, List of Species of Fresh Water Algae 

 found in Iowa. Proc. Iowa Acad. Sci. 1875-1880. 28. 1880. 



Twenty-seven genera represented. 



692. Holland, F. Reproduction of Closterium by Swarm 

 Spores. Am. Mo. Mic. Jour. 3:41, 42. Mrl882. 



Mistalies Chytridium parasite for desmid structures. 



693. Holm, T. Beitrage zur Flora West Groenlands. 

 Engler's Bot. Jahrb. 8:283-320. 1887. 



Lists 55 species of algae. 



694. Holsteln, 0. W. Gyroiithes holsteini (Alga) from the 

 Carboniferous of Texas. Proc. Phil. Acad. 1887:436. 

 (1887.) 1888. 



Specimen presented to the Museum. 



695. Hooker, J. D. The Botany of the Antarctic Voyage 

 of H. M. Discovery Ships Erebus and Terror, in the years 

 1839-43. Flora Antarctica. I: Part II. Botany of Fuegia, 

 the Falklands, Kerguelen's Land, etc. Algae. 454-519. pi. 

 165-19 Jf. 1847. 



696. . On the Diatomaceous Vegetation of the Ant- 

 arctic Ocean. Rep. 17th meeting Brit. Ass. Adv. Sci. Notices 

 and Abstracts of Communications. 83-85. (Je.) 1847. — (Am. 

 Jour. Sci. Arts. IL 4:424. N1847.) 



697. . Outlines of the Distribution of Arctic Plants. 



(I860.)— Trans. Linn. Soc. 23:251-348. 1862.— (Can. Nat. N. S. 

 3 : 325-362. 1868. ) 



Two species of Characeae and 100 species of other algae have been 

 found within the Arctic circle. 



. See Harvey, W. H. and Hooker, J. D. 



