On Correlation in the Growth of Roots and 
Shoots (Second Paper) \ 
BY 
L. KNY. 
O N the occasion of the Meeting of the British Association 
for the Advancement of Science at Oxford, in 1894, 
I read a paper 2 before Section D on the subject indicated by 
the above title. My investigations had led me to the con- 
clusion, that in seedlings of the species under operation ( Vicia 
Faba and Zea Mays), root and shoot are to a high degree 
independent of each other in their growth, but that, on the 
other hand, in the case of willow-cuttings the effect of the 
repeated removal of the one organ soon became apparent in 
the diminution of the other. 
Two years later Hering published a paper in the ‘ Jahrbiicher 
fur wissensch. Botanik 3 ’ on the same subject, but only with 
reference to seedlings. Whilst confirming my results, he 
regards it as unfortunate, that I determined only the final 
result of experiments extending over considerable periods 
1 Read before the Botanical Section of the British Association at the Glasgow 
Meeting, Sept. 1901. 
2 Annals of Botany, viii, p. 265. 
8 Ibid, xxix, p. 132, 1896. 
[Annals of Botany, Vol. XV. No. LX. December, 1901.3 
S S 2 
