Winter-killing of Buds. 317 
open and appear to be perfectly normal to the un- 
eritical observer. The latter case is common in 
peaches and apricots. Fig. 49 illustrates the point. 
The flower at the right was unin- 
jured by the winter, and the pistil 
is seen, grown full length, at 1. 
In the other flower, the pistil, at 
2, is dead. We know that this 
pistil was killed before the bud be- 
gan to swell, because it retains the 
small size which it must have 
had in the dormant bud. If it e 
had been killed after the bud had Fig.49. Normal apricot flower 
swollen, it would have appeared beh ee bined 
as a much larger and a more 
or less erumpled or withered organ, as in 0, Fig. 
52, page 320. 
A true fruit-bud is one in which the flower, or 
cluster of flowers, is present in miniature. (See 
“The Pruning-Book” 
for full discussion 
of fruit-buds.) This 
flower occupies the 
very center of the 
bud, and is _ sur- 
Fig. 50. Apricot buds. u, alive; b ie rounded by dense lay- 
killed by winter. Enlarged. ers of scales. A 
healthy bud is nor- 
mally green in the central part in cross-section. 
When the bud has been killed by the winter, in 
the usual manner, this central portion of the 
