452 TUFTS COLLEGE STUDIES, VOL. II, No. 3 



Thuret, G. and Bornet, E. 1878. Etudes Phycologiques. 



Paris. 

 Tilden, Josephine E. 1895. A contribution to the bibliography 



of American algae. Minn. Bot. Studies, Vol. I, 



P- 295- 

 1898. Observations on some West American thermal 



algae. Bot. Gaz., Vol. XXV, p. 87. 

 Toni, G. B. de, 1889. Sylloge algarum omnium hucusque cog- 



nitarum, Vol. i. Padua. 

 Vaucher, J. P. 1803. Histoire des conferves d'eau douce. 



Geneva. 



Vickers, Anna. 1905. Liste des algues marines de la Bar- 

 bade. Ann. Sci. Nat., Ser. 9, Bot., Vol. I, p. 45. 

 1908. Phycologia Barbadensis. Paris. 

 Wallroth, F. W. 1815. Annus botanicus, sive supplementum 



tertium ad C. Sprengelii floram Halensem. 

 1833. Compendium florae germanicae, IV. Nuremburg. 

 Walz, J. 1866. Beitrag zur Morphologic und Systematik der 



Gattung Vaucheria. Prings. Jahrb., Vol. V, p. 9. 

 Warming, E. 1876. Ein vierzelliges Gonium. Bot. Tids- 



skrift, Ser. 3, Vol. I, p. 69. 

 Weber-Van Bosse, Anna. 1898. Monographic des Caulerpes. 



Ann. Buitenzorg, Vol. XV, p. 243. 

 West, G. S. 1901. The alga flora of Yorkshire. Trans. 



Yorkshire Nat. Union, part 22, etc. 



1904. A treatise on the British freshwater algae. Cam- 

 bridge. 



1905. West Indian fresh water algae. Jour, of Bot., Vol. 

 XUI, p. 281. 



1908. Some critical green algae. Jour. I^inn. Soc., Bot., 



Vol. XXXVIII, p. 279. 



West, W. and G. S. 1895. On some fresh water algae from 

 the West Indies. Jour. Linn. Soc., Bot., Vol. XXX, 

 p. 264. 



i895a. The fresh water algae of Madagascar. Trans. 

 Ivinn. Soc., Bot., Ser. 2, Vol. V, p. 41. 



New American algae. Jour, of Bot., Vol. XXXIII, 

 p. 52. 



