341 
BIBLIOGRAPHY. 
Kew Report, 1879, p. 21. 
Kew Bull., 1899, pp. 91-94, 1 pl. 
Cooke, M. C.; Grevillea, xi., 1880, p- 11. Journ. Linn, Soe., 
XVill., pp. 461-467. 
Puttemans, M. A.; Bull. Soc. Myc. France, 20, p. 157 (1904). 
Spegazzint, C.; Revista de la Facul. de Agronom. y Veter. de 
la Plata, No. 22, Oct. 1896. 
2. Tap-roor Disease oF THE Correr TRER. 
The tap-root is the part attacked by the eelworm, and aie 
a very characteristic appearance, becoming much swollen an 
much elongated radially, resembling the palisade tissue of a leaf. 
The eelworms are present in spaces between these abnormal 
cork-cells. a 
The smaller roots usually bear a number of small knots or galls 
containing eelworms. : ' 
‘ungal hyphae are also generally present in the abnorma 
cortical tissues of the tap-root, but the eelworm is the primary 
cause of disease. : 
Batches of diseased trees show up very conspicuously and can 
readily be detected and removed. So far as experience goes a tree 
that is once attacked never recovers, consequently the wisest course 
is to remove all such trees and to burn the roots. The disease sat 
not spread very rapidly, but oe cree time it gradually extends 
its area from a central point of infection. Ps 
Treating the soil with bisulphide of carbon is the me print 
remedy. This should be applied where diseased saan ve 
removed, and the treatment should also extend we yon 
zone of diseased trees. 
BIBLIOGRAPHY. 
Tobert, M. C., Comp. Rend., Ixxxvii. (1878), p. Sal. 
Noack, Fritz von; Zeitschr. Pflanzenkr., 8, p. 137. 
