1917] 
FREIBERG—MOSAIC DISEASES 223 
In conclusion the writer wishes to express his indebtedness 
to Dr. С. Т. Moore and the Missouri Botanical Garden for 
generously providing facilities with which to prosecute the 
problem, and also, to thank Dr. B. M. Duggar for numerous 
suggestions and helpful criticisms. 
Graduate Laboratory, Missouri Botanical Garden. 
BIBLIOGRAPHY 
Man ee zr А 20. The mosaic disease of tobacco. Т). 8. Dept. Agr., Bul. 40: 
(142). А review of р of the mosaic disease of tobacco, 
together with a bibliography of more important contributions. Torr. 
Bot. Club, Bul. 41: 435-458. E 
, (15). Distribution of the virus of the mosaic disease in og : a 
ments, anthers, and pistils of affected tobacco plants. Jour. Agr. R 
251-256. pl. 23. 1915. 
— ————, (15a). Effect of dilution upon the Е of the virus of the 
mosaic disease of tobacco. Ibid. 295-299. 19 
———, (16). The mosaic disease of tomatoes and petunias. Phytopath. 
6: 328-336. 1916. 
------, (16а). Some properties of ET virus of the mosaic disease of tobacco. 
Jour. Agr. Res. 6: 649—674. pl. 1. 1916. 
-------- (0169). А specific mosaic disease in Nicotiana viscosum distinct from 
the mosaic disease of tobacco. Ibid. 7: 481-487. pl. 35-36. 1916. 
-— 2: L. ('08). Temperature and growth. Ann. Bot. 22: 557-591. f. 1-14. 
Baur, E. (06). Ueber die infektióse Chlorose der Malvaceen. К. preus. Akad. 
Wiss., math.-naturw. Kl. Sitzungsber. 32: 11-29. 1906. 
——————, (08). Ueber eine infektióse Chlorose von Euonymus japonicus. Ber. 
d. deut. bot. Ges. 26: 711-713. 1908. 
— P. А. (16). The presence of nitrites and ammonia in diseased отте 
— with regard to crop rotation and soil depletion. Am. Che 
E . and Ргос. 38: 2572-2576. 1916. 
re W. B. (16). On a case of стя from mosaic disease of tomato. 
Appl. Biol. 2: 263-266. 1915- 
Brown, W. (715). Studies in the physiology % I l. The action of 
Botrytis cinerea. Ann. Bot. 29: 313-348. 
Chapman, С. Н. (13). “Mosaic” and allied diseases, with especial cM to 
tobacco and tomatoes. Mass. Agr. Exp. Sta., Rept. 25: 94—104. 
------- (16). The effect of colored light on the mosaic disease of tobacco. 
Science N. S. 44: 537-538. 1916. 
Clinton, С. P. (715). Chlorosis of plants with special reference to calico of 
tobacco. dn. Agr. Exp. Sta., Rept. 1914: 357—424. pl. 25-32. 1915 
—— С. (705). La rouille blanche du tabac et la nielle ou maladie de la 
aique, Compt. Rend. Acad. Paris 140: 678-680. 1905. 
