456 ALLARD: MOSAIC DISEASE OF TOBACCO 
36. 1903. . On the spreading of the mosaic disease 
(calico) on a tobacco field. Bull. Inst. Bot. Buitenzorg 
71016. 
37- 1903. Iwanowski, D. Uber die Mosaikkrankheit der Tabaks- 
pflanze. Zeits. Pflanzenkrank. 13: 1-41. pl. I-3. 
38. a Bouygues H., & Perreau,—. Contribution Al’étude dela 
nielle des feuilles de tabac. Compt. Rend. Acad. Sci. 
Paris 139: 309-310. 
These investigators claim to have obtained by selection strains of tobacco 
resistant to the disease called by them ‘“‘la nielle.’”’ This disease appears to be a rust 
of some sort, although it is mentioned in an abstract in the Experiment Station 
Record, U. S. Department of Agriculture, 16: 677, 1905, as the mosaic disease of 
tobacco 
39. 1904. Hunger, F.W.T. Over den aard der besmettelijkheid der 
mozaiek-ziekte bij de tabaksplant. Handelingen, 
Achtste. Viaamsch Natuuren Geneeskundig Congres 
gehouden te Antwerpen op 24 en 25 September, 
afl. 3, p. 45-50. 
40. 1904. . Die Verbreitung der Mozaikkrankheit 
infolge der Behandlung des Tabaks. Centralb. Bakt. 
Zweite Abt. 11: 405-408. 
41. 1904. . Invloed van het verspenen van tabaks 
bibit. Korte berichten uit ’s Lands Plantentuin. 
Teysmannia 15: 58-64. 
42. 1904. d’Utra, Gustavo. A molestia de ‘‘Mosaico” do fumo. 
Boletim da Agricultura, Sao Paulo V. 2: 51-71. 
d’Utra merely reviews the work of a number of investigators connected with 
aes mogalc disease of tobacco. His statement that the disease rarely ever occurs 
in successive years is of considerable interest. 
43- 1904. Pirazzoli, Francesca. Male della bolla e del mosaico. 
Bolletinno Technico della Coltivazione dei Tabacchi 
s lrges Db, 7. 
44. 1904. Selby, A. D. Tobacco diseases and tobacco breeding. 
Ohio Agr. Exp. Sta. Bull. 156: 87-114. pl. 1-8 + f. 
I-3. 
45. 1905. Delacroix, Georges. La rouille blanche du tabac et la 
nielle ou maladie de la mosaique. Compt. Rend. 
Acad. Sci. Paris 140: 678-680. 
Distinction is made here between “‘la rouille blanche” (white rust), @ bacterial 
disease which Delacroix at first described as true mosaic, and “la nielle vrai’’ (true 
mosaic). He names the Seictitus considered by him sesponsible for “la rouille 
blenche.”’ 
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