Notes. 
T 75 
In no case could the slightest difference be detected between the 
control plants of either the stock or scion except in size, the grafted 
plants being slightly dwarfed. 
Scions taken from year-old plants and grafted on stocks of the 
same age have flowered and produced seed which appears to be fertile. 
In the case of Tropaeolum majus grafted on T. canariense and vice 
versa , the results were much the same, both stock and scion retaining 
their original characters unaltered. The plants were, however, very 
dwarfed, the T. canariense only growing to the height of three feet in 
the sturdiest specimen. Their flowering period was also retarded for 
6 or 8 weeks, and so far the only plants to produce seed have been 
those grafted on the roots which have been able to acquire a small 
root-system of their own. The grafted plants, moreover, were 
peculiarly liable to the attacks of slugs and caterpillars, while the 
control plants were rarely attacked. 
Not only the callus but all parts of the plants were liable to 
attacks of this kind, probably owing to an accumulation of reserve 
materials in the scion through an interruption in the process of trans- 
location at the junction with the stock. 
The dwarfing effect of grafting was also noticeable in experiments 
with radishes, Raphanus raphanistrum , and the plants were so late in 
flowering, that an early frost spoiled all prospects of a crop of seed. 
The other Cruciferae used were Kale grafted on Drumhead 
Cabbage, Broccoli on Cabbage, Brussel Sprout on Cabbage, Kohl- 
rabi on Kale, and vice versa in each case. The operation was 
generally successful, but all the plants (96) were killed, apparently by 
the nematode Tylenchus devastatrix. 
Various grafts were also made among the Leguminosae. Trifolium 
repens was grafted on T. pratense and T. hybridum, T. pratense on T, 
repens and hybridum , and T. hybridum on T. repens and T. pratense. 
The stock has flowered in one or two cases this season, but so far 
the scions have made relatively little growth. 
Medicago sativa has also been successfully grafted on to T. pratense 
and T. pratense on Anthyllis vulneraria. In this case the scion and 
stock belong to strikingly different genera. 
This series of experiments then confirms Daniel’s results that the 
effect of grafting is often to dwarf the plants, retard their flowering 
season, and in some cases render them far more liable to the attacks 
of animal pests. None of them though show any visible signs of the 
