INDEX TO AMERICAN BOTANICAL PITERATURE | 29 
Thatcher, R. W. The chemistry of plant life. Pp. i-xvi + 1-268. 
New York. 1921. 
. G. E. Hegari in Arizona. Univ. Arizona Coll. Agr. Circ. 
1-4. Ap iga2t. [lIllust.] 
whee, R.C. Botrytis rot and wilt of tomato. Bull. Ohio Agr. Exp. 
Sta. 6: 59-62. Ap i921. [Illust.] 
Thurston, H. W. A note on the corrosive sublimate treatment for 
the control of Rhizoctonia. Phytopathology 11: 150, 151. r 
1921. 
Tiffany, L. H. Algal food of the young gizzard shad. Ohio Jour. Sci. 
21: 113-122.. FB igea 
Tiffany, L. H. New forms of Oedogonium. Ohio Jour. Sci. 21: 272, 
273. $f. Ts Je oe 
2 new species from Ohio. 
Tisdale, W. H., & Jenkins, J. M. Straighthead of rice and its control. 
U.S. Dept. Agr. Farm. Bull. 1212: 1-16. f. 1-6. Je 1921. 
Toumey, J. W. Damage to forests and other vegetation by smoke, 
ash and fumes from manufacturing plants in Naugatuck Valley, 
Connecticut. Jour. For. 19: 367-373. f. 1-6. Ap 1921. : 
Trelease, W. The Jack Oak (Quercus ellipsoidalis). Trans. Illinois 
Acad. Sci. 12: 108-118. pl. 139-143. 1919. 
Trelease, W. North American pipers of the section Ottonia. Am. 
_. Jour. Bot. 8: 212-217. pl. 5-8. 30 Ap 1921. 
Tucker, E. M. Bibliographical notes. Jour. Arnold Arbor. 2: 181- 
184. 1921. 
Discussion of issuance of Nouveau Duhamel and of Torrey and Gray’s Flora of 
North America. 
Tucker, E. M. Catalogue of the library of the Arnold Arboretum of 
Harvard University. Publ. Arnold Arbor. 6. 1: 1-782. 1914; 
I-542. I917. 
Compiled under the direction of Charles Sprague Sargent. 
Ule, E. Unter den Indianern des nérdlichen Amazonas. Verh. 
Naturw. Vereins Hamburg III. 21: LX XVI, LXXVII._ 1914. 
A botanical and anthropological journey. 
Uphof, J. C. T. Die Waldflora im Staate Washington. Vegations- 
bilder XIII. 7: 17 pp. + pl. 37-42. 1920. 
Urban, I. Novitates haitienses. Notizbl. Bot. Gart. und Mus. Berlin- 
Wipe 7: 495-499. 1 Mr 1921 
new species in ei (3), pie (1), Cassia (1), Sebastiana (1). 
‘sue na and Eugenia (1). 
