458 ALLARD: MOSAIC DISEASE OF TOBACCO 
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Here it is claimed that the peach and cherry types are naturally resistant to the 
mosaic disease, and that crossing these with Earliana have given strains resistant 
to the disease. 
59. 1912. Allard, H. A. The mosaic disease of tobacco. Science II. 
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ledieliia i Zemleustroistva, Department Zemledieliia, 
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nykh Uchrezhdenii i Spetsialistov po Sel’ skokhoziaist- 
vennoi Chasti, (Russia), no. 9 
1913. Chapman, G.H. Mosaic and allied diseases, with special 
reference to tobacco and tomatoes. Ann. Rep. 
Massachusetts Agr. Exp. Sta. 25: 94-104. 
62. 1913. Melchers, Leo E. The mosaic disease of the tomato and 
related plants. Ohio Naturalist 13: 149-173. pl. 7; 
Sf ts 19ta. 
63. 1903-1911. Jensen, Hjalmar. Mozaiek-ziekte. Medeel. Pro- 
efsta. Vorsten-Landsche Tabak. No. 5, 1913. 
64. 1914. Allard, H. A. The mosaic disease of tobacco. U. S. 
Dept. Agr. Bull. 40: 1-33. pl. 1-5. Ja 1914. 
On 
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