336 Index to American botanical literature 



Snow, C. H. The principal species of wood : their characteristic 

 properties, i-xvi. 1-203, /^- ^~39' New York, 1903. 



Spillman, W, J, Mendel's Law. Pop. Sci, Mo. 62: 269-280. Ja 



1903- 

 Timberlake, H. G. Development and structure of the swarm-spores of 

 Hydrodictyon, Trans. Wis. Acad. 13: 486-522.//. 2g, 30. 1902. 



Trotter, A. Descrizioni di alcune galle dell' America del Sud. Bull. 

 Soc. Bot. Ital. 1902: 28-107. 1902. 



Ule, E. Das Uebergangsgebeit der Hylaea zu den Anden. Bot. Jahr. 

 Beibl. 73 : 74-78. 4 D 1903. 



Urban, I. Flora portoricensis. Symb. Antill. 4 : .1-192. 16 S 1903. 



New species are described in Aristida, Eragrostis, Arthrostylidinm, Tnodes, Philo- 

 dendrott, Costus, Campylocentruni, and PeperoTtiia. 



Urban, I. Ueber die botanische Erforschung Westindiens in den 

 letzten Jahrzehnten. Bot. Jahrb. Beibl. 73 : 28-32. 4 D 1903. 



Van Tieghem, P. Structure et affinites des Erythroxylacees : un nou- 



velle exemple de cristarque. Bull. Mus. Hist. Nat. Paris 9 : 287- 

 295. 1903. 



Van Tieghem, P. Sur les Columelliacees. Bull. Mus. Hist. Nat. Paris 

 9: 233-239. 1903. 



White, C. A. Varietal mutation in the tomato. Science II. 14 : 

 841-844. 29 N 1901. 



"Woods, A. F. Autumnal coloration of foliage. U. S. Mo. Weather 

 Rev. 31 : 270, 271. 17 Au 1903. 



