- 489 - 
product, obtained from a tobacco factory, and was very rich in 
nicotine. 
Greenhouse plants hearing aphids are fumigated with tobacco 
paper, which is being put on the market by the firm of Froebel 
of Zurich. This paper is a kind of cardboard, probably prepared 
with saltpeter and impregnated with tobacco juice. 
ADAMS, R. (2090) 
1904. TABAKSTAUB, EIN WOHLFEILES PlUCHEEklTTEL FUR GStfACHSHAUSER. Garten- 
welt 8 (27) : 316-317. 
Tobacco fumigation is recommended, in Germany as a cheap end 
effective remedy for any kind of insect pests on plants in green- 
houses. Tobacco dust, obtained from sweepings in tobacco factories, 
is heated on iron plates or on the heating pipes. 
SANDERSON, E. D. (2091) 
1906. NOTES FROM NEW HAMPSHIRE. U. S. Dept. Agr. Bur. Ent. Bull. 
60, pp. 74-76. 
The melon aphid ( Achi s gossypii GlovO is controlled very satis- 
factorily by fumigating houses with the "fumigating kind" of tobacco 
powder (p. 75) . 
R[0RA], L. (2092) 
1907. FUMIGATION D'UNE SERRE A PECHERS. Tribune Hort. 2: 256. 
The fumigation of greenhouse plants by burning tobacco stems 
and ribs is effective and is recommended in Belgium. 
NOEL, P. (2093) 
1911. LE PCU DU LAURIER-ROSE. Bull. Mens. Sec. Gent. Agr., Hort. et 
Acclim. Nice 51: 260-261. 
Fumigation with tobacco is recommended for greenhouse plants 
infested with ooccids ( Aspidiotus nerii) . If tobacco juice (at 12 
Baume) is used, it can be evaporated on heated plates. 
CHEVALIER, H. (2094) 
1912. IE BOGONIA GLOIRE DE TORRAIHE. Rev. Hort. Beige et Etrangere 
38: 138-141. 
Fumigate red spiders, thrips, and aphids on B egon ia in 
greenhouses by pouring tobacco extract on the hot water pipes 
or in shallow vessels on the hot pipes. A denser smoke may be 
obtained by piling up waste tobacco on the hot pipes. This 
tobacco should be sprinkled with water to keep it damp (p. 140). 
