FURTHER EXPERIMENTS ON CORRELATION OF 
GROWTH IN BRYOPHYLLUM CALYCINUM 
JACQUES LOEB 
(WITH SEVENTEEN FIGURES) 
The following note contains some additional observations on the 
phenomena of correlation in Bryophyllum calycinum. In his first 
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note’ the writer had reached the conclusion that a flow of certain 
substances away from the leaf or its notches prevented roots and 
shoots growing from these notches, so long as the leaf was connected 
* Logs, J., Bor. Gaz. 60:249-276. figs. 41. 1915. 
293] (Botanical Gazette, vol. 62 
