14 Wisconsin Academy of Sciences , Arts, and Letters. 
A tree with 82 rings at its base and 22 m. high was cut in 
March. The bark was fairly rich in starch from the ground up. 
The 32 outer rings of wood contained starch. At the first 
branches 12 m. above ground, where the stem had thirty rings, 
only the fifteen outer rings were alive and starch bearing. At a 
height of 18 m. eleven or twelve of the fourteen rings present 
contained starch. Considerable starch occurred in the wood at 
the tree’s base and decreased rapidly upward to a minimum 
about 3 m. above ground, above which it gradually increased 
again to a maximum just below the branches. From this point 
upward a decrease occurred which reached a second minimum 
18 m. above ground, and was followed by a second increase up¬ 
ward to a maximum at the point where the stem had but six 
wood rings. No fats could be found in the bark and very little 
in the wood. Apparently fats had been changed to starch. 
More starch was present in the small branches of this tree than 
of the one cut in February. Both the wood and bark of the 
roots contained considerable starch except the youngest phloem 
cells which were devoid of it. In excentric roots the starch dis¬ 
tribution was similar to that found in the former tree. 
Another tree which was much like the one cut in March as to 
size, age, etc., was cut in late April. Its bark was rich in starch 
with the exception of the phloem about 8 m. above ground where 
none occurred. The reduction in the number of live, starch¬ 
bearing wood rings from below upward was about the same as 
in the other cases. The wood rays near the cambium were de¬ 
void of starch. A slight amount of fat was present in the bark, 
while that of the wood increased from a small amount at the 
base of the tree upward to a maximum in the smallest twigs 
where it exceeded the starch. In this case a starch maximum 
occurred also at the base of the trunk, while in the branch bear¬ 
ing part of the stem the starch was evidently being dissolved 
from the cambium inward and in increasing extent upward. 
Fats were abundant throughout the trunks and also present in 
the wood of the larger roots but absent from the bark of roots. 
But very little starch was present in the wood-rays at the base 
of the trunk and the season’s growth of wood was devoid of 
starch, while the previous year’s growth was almost free of it in 
mid-June. From this region upward starch-free peripheral 
wood increased up to the first branches, where it included the 
