364 MINNESOTA BOTANICAL STUDIES. 



858. Loekwootl, S- Raising Diatoms in the Laboratory. 

 Jour. N.Y. Mic. Soc. 2:153-166. 2^1- 6, 7. D1886.— (Bot. Gaz. 

 12:113. Myl887.)— (Jour. Roy. Mic. Soc. 1887:626. Ag 

 1887.)— (TheMicroscope. 7:315,316. 1887.) 



859. . Aberrant Forms in Cultivated Diatoms. Am. 



Mo. Mic. Jour. 14:269-273. i i^Z. 01893. 



860. Long, Emma de. Crimson Snow. The Voyage of the 

 Jeannette. The Ship and Ice Journals of George W. de Long. 

 2:447. 1883. 



861. Lord, J. K. The Naturalist in Vancouver Islands and 

 British Columbia. 



The Appendix contains a list of 119 diatoms. 



862. Lyiigbye, H. C. Tentamen Hydrophytologiae danicae, 

 continens omnia hydrophyta cryptogama Daniae, Holsatiae, 

 Faeroae, Islandiae, Groenlandiae, huj usque cognita, system- 

 atice disposita, descripta et iconibus illustrata, adjectis simul 

 speciebus norwegicis. Opus praemio ab universitate regia 

 Havniensi ornatum, sumtu regio editum. Havniae, Gyldendal. 

 4. i-xxxii. 1-248. pi 1-70. 1819. Hafniae. 



863. MacDougal, D, T. Titles of Literature Concerning 

 the Fixation of Free Nitrogen by Plants. Geol. and Nat. Hist. 

 Surv. Minn. Bull. No. 9. 186-221. 27S1894. 



864. McKay, A. H. Organic Silicious Remains in the Lake 

 Deposits of Nova Scotia. Can. Rec. Sci. 1 : 236-244. 1885. 



A list of 104 diatoms is given. 



. See Hay, O. U. and MacKay, A. H. 



865. MacKenzie, J. J. A Preliminary List of Algae col- 

 lected in the Neighborhood of Toronto. Proc. Can. Inst. III. 

 7 : 270-274. Apl890. 



One hundred and seven species enumerated. 



866. MacMillan, C Sexual Immobility as a cause of the 

 development of the Sporophyte. Am. Nat. 25:22-25. Jal891. 



867. . The Limitation of the term "Spore." Bot. 



Gaz. 18:130-134. Apl893. 



868. . Archenema, Protonema and Metanema. Bot. 



Gaz. 19:19-24. 17Jal894. 



869. . Sphaeroplea annulina (Roth) Ag. in Min- 

 nesota. Bot. Gaz. 19:246, 247. 20Jel894. 



870. Maddox, R. L. Cleaning Diatoms.— (Am. Nat. 6:188. 

 Mrl872.) 



871. Magnus, P. Sulla diffusione geografica della Sphaero- 

 lea annulina (Roth) Ag. Notarisia. 5: 1014-1016. 30Jel890. 



