282 
BRYCE : 
layers of tissue laid down by the cambium of the spherical 
body. In other cases no trace of a former connection can 
be found, and here no doubt the bud primordium has lost 
connection with the stem at a very early stage before the appear- 
ance of vascular elements in the connection. Occasionally, 
amongst the last-named cases, a small protuberance may be 
found on the surface of the spherical body, apparently an 
attempt by the spherical body to develop a vascular connec- 
tion with the stem. Under favourable conditions, as, for 
example, if the tree were pollarded, this protuberance would 
join up with the stem and the spherical body would grow forth 
as a shoot. Some specimens of these spherical bodies have 
vestiges of a shoot directed outwards, and sections have been 
procured which show a typical vegetative cone with leaf 
rudiments and rudimentary axillary buds. 
The spherical bodies are thus shoots, and might be called 
globular shoots, as described by Strasburger (29). The 
sprouting of nodules mentioned by Ridley (26) and Bancroft (3) 
were probably cases of globular shoots stimulated to further 
growth by changed conditions. A specimen at Peradeniya 
shows a globular shoot of spherical outline without any 
external vestige of a connection with the stem, which has 
developed a shoot 4 inches long bearing a small leaf at its apex. 
The material collected from the 2,000 untapped trees 
already referred to was classified as follows : — 
(1) Material collected from old leaf -scars. 
(2) Material collected from areas where the bark exhibited 
no marking. 
(3) Material collected from wound callus. 
(4) Material collected from the fork of trees with forked 
stems. 
( 1 ) Material from Leaf -scars. 
The leaf-scars remain distinct on old stems up to six or 
seven years of age ; they appear as a horizontal line of depres- 
sion 4 or 5 inches long, with a shallow pit in the middle. 
Generally, buds if present are dormant, and give no external 
evidence of their presence. In some cases, however, these 
dormant or latent buds of the old leaf axils lose their connection 
