506 SEASONAL VARIATIONS OF BRANCH OF HORSE-CHESTNUT. 
year. Thus, as regards its greatest elevation in each year, this 
was :— 
In 1895, 81 inches ; 
, 1896, 77 inches; 
„ 1897, the same; and, 
„ 1898, 752 inches. 
Again, as regards the minimum elevation (or greatest depression) 
in each year, this was :— 
In 1895, 703 inches ; 
„ 1896, 684 inches ; and 
„ 1897, 703 inches. 
If it had not been for the great hailstorm, it would probably 
have been about 67 inches, instead of 702 inches, in the last- 
named year. 
The extreme range of variation in the elevation of the branch 
observed during the three years in question was (as will be seen) 
124 inches—from the maximum (81 inches) on April 21st, 1895, 
to the minimum (682 inches) on September 28th, 1896. It appears 
probable, however, that a stil] lower minimum would have been 
observed in the autumn of 1897 but for the effects of the great 
hailstorm. 
I do not venture to claim for these observations any special 
or definite value, such as would make them obviously worth 
recording ; but, as one very seldom can foresee exactly how, when, 
or to whom any such series of observations may prove useful, Iam 
not without hope that my observations may, in some unexpected 
way, prove valuable to some future observer. 
Nor need I point out that many more observations on other 
trees require to be made before we are able to state that such 
movements as those undergone by the branch of this chestnut- 
tree are usual and ordinary. 
EXPLANATION OF PLATE 27. 
Seasonal Chart showing approximately the variations in rise and fall of 
branch of ZEsculus Hippocastanum. 
