524 Wisconsin Academy of Sciences , Arts, and Letters. 
1897B. de Wildemann, E. Les algues du Linsburg. Ann. 
de la Soc. Beige de Microscopie. 21: 42-68. 1897. 
1897C. de Wildemann, E. Observations sur les algues rap- 
portees par M. J. Massart d’un voyage aux Indes 
Neerlandaises. Ann. du Jard. bot. de Buitenzorg. 
I Suppl. 32-106. 1897. 
1899. de Wildemann, E. Prodrome de la flora algologique 
des Indes Neerlandaises. Batavia. 1899. 
1879. Wille, N. Ferskvandsalger fra Novaja Semlja sam- 
lede af Dr. F. Kjellman paa Nordeskiolds Expedi¬ 
tion 1875. Ofvs. Kgl. Vet.-Ak. Forh. 36: No. 5: 
13-74. 1879. 
1884. Wille, N. Bidrag til Sydamerikas algflora. Bih. 
t. k. Sv. Vet.-Ak. Handl. 5: No. 18: 1-64. 1884. 
1897. Wille, N. Om Faeoernes Ferskvandsalger og om 
Ferskvandsalgernes Spredningsmaader. Bot. Not. 
1-32, 49-61. 1897. 
1901. Wille, N. Algologische Notizen. VII. Zur Ver- 
breitung der Siisswasseralgen im siidlichen Nor- 
wegen. Nyt. Mag. f. Naturvidenskab. 39: 1-22. 
1901. 
1903. Wille, N. Ueber einige von J. Menyhardt in Siid- 
afrika gesammelte Siisswasseralgen. Ost. Bot. 
Zeits. 53: 89-95. 1903. 
1913. Wille, N. Neue Siisswasseralgen von den Samoa- 
Inseln. Hedwigia. 53: 144-147. 1913. 
1872. Wittrock, V. B. Om Gotlands och Olands Sotvat- 
tens-Alger. Bih. t. k. Sv. Vet.Ak. Handl. 1: No. 
1: 1-72. 1872. 
1881. Wolle, F. W. Fresh water algae, pp. 210-223. 
in Britton, N. L. A preliminary catalogue of the 
flora of New Jersey. New Brunswick. 1881. 
1887. Wolle, F. W. Fresh-water algae of the United States. 
Bethlehem (Pa.) 1887. 
1869. Wood, H. C. jr. Prodromus of a study of the fresh 
water algae of eastern North America. Proc. Am. 
Phil. Soc. 11: 119-145. 1869. 
1874. Wood, H. C. jr. A contribution to the history of the 
fresh-water algae of North America. Smithsonian 
Cont. to Knowledge. 19: No. 3: 1-262. 1874. 
