LUTHER BURBANK 
auger. To what extent the interference with the 
supply of nourishment that was being convoyed to 
the buds retards their development, might be inter- 
esting matter for observation. 
But this is something that does not greatly con- 
cern the sugar maker, and to which he doubtless 
never gives a thought. 
It is also interesting to conjecture whether it 
might be possible by selective breeding to produce 
a variety of sugar maple that will furnish sap in 
exceptional quantity and of unusual quality. The 
case is obviously different from that of the sugar 
prune or the sugar beet, both of which have been 
trained to increase their sugar content. 
But there is no doubt that different individual 
sugar maples differ widely in their sap producing, 
or at least in their sap rendering, quality. Pre- 
sumably the difference may be due to the size of 
the root system. But so far as I know there are 
no accurate observations on the subject, nor has 
anything been done to determine whether a better 
race of sugar maples could be developed. 
OTHER PLANT JUICES 
The extraordinary plant laboratories that man- 
ufacture sugars out of water and air is capable of 
transforming these sugars into many unusual sub- 
stances, differing in character with the constitution 
of the particular plant. 
[246] 
