366 MINNESOTA BOTANICAL STUDIES. 



and its varieties. Jour. Roy. Mic. Soc. 1888:7-10. pZ. 2. 

 14D1887.) F1888. 



885. Mason, N. N. Cleaning Diatoms from Sand. N. Y, 

 Mic. Soc. 5:116. 01889.— (Am. Mo. Mic. Jour. 11:65,66. 

 Mrl890.)— (Jour. Roy. Mic. Soc. 1890:112. 1890.) 



886. Massee, George. Life-History of a Stipitate Fresh- 

 water Alga. Jour. Linn. Soc. (Bot.) 27:457-462. pL 12. 1891. 



Describes development of Dictyosphaerium ehrenbergianum. Naeg. 



887. Mathew, G. F. Cambrian Organisms in Acadia. Trans. 

 Roy. Soc. Can. 74.i35_i62. j^pi 1889.— (Can. Rec. Sci. 

 3:383-387. J11889. ) 



The flora of this series is stated to consist of sea-weeds, of which 

 group, Palaeochorda is found in the lowest sandstone beds. Five 

 species of algae, of which 4 are new to science, are described. 



888. . Illustrations of the Fauna of the St. John 



Group. Trans. Roy. Soc. Can. 84:128-166. 189L 



New genus Medusichnites includes forms called algae by Schimper. 



889. Mauler, E. Protococcus nivalis. — (Am. Mo. Mic. Jour. 

 2:74. Apl881.) 



A letter containing facts concerning "red snow" of the Alps. 



890. Mayall, J. Jr. Floegel's Researches on the Structure 

 of the cell walls of Diatoms.— (Am. Nat. 18: 747. J11884.) 



891. Maze, H. and Schramm, A. Essai de Classification 

 des Algues de la Gaudeloupe. 2nd Ed. 1-283. 1870-77. Basse - 

 Terre, Gaudeloupe. 



892. McElroy, S. Organic Life and Matter in Water. Proc. 

 Am. W. W. Ass. 7th Ann. Meeting held at Minneapolis, Minn. 

 July 13-15, 1887. 



893. Mease, J. Fossil Fucoid Impressions from Mifflin 

 county, Pennsylvania, Proc. Phil. Acad. 2:8. (13F.) JaF1844. 



Donated to Museum. 



894. Meehau, T. Report of the Botanical Section. Proc. 

 Phil. Acad. 1878:436-441. (31D1878.) 1879. 



Fifty-four species of marine algae from California, collected by 

 Henry Hemphill, presented to the conchological section of the 

 Academy. 



895. . Marine Algae. Proc. Phil. Acad. 1892:515. 



(27D1892.) 1893. 



Two species received from Baron Ferdinand von Mueller added to 

 the Museum. 



896. Melville, J. C. Notes on the Marine Algae of South 

 Carolina and Florida. Jour, of Bot. 4 : 258-265. 1875. 



