58 CHRISTISON—OBSERVATIONS ON 
The rates of the quite young Nos. 69, 85 are only °77 and ‘59, 
and seem poor compared with those of most other forest 
trees in the Garden, but No. 3, not much older, averaged 1°24 
in four years, so that the conduct of Nos. 69, 85 may be 
exceptional. 
In the species there seem to have been years of depression 
in 1888, 1891, and 1895. 
The range in the young trees was not excessive, ‘55 to I'00, 
"50 to *75, and ‘go to 1°35. 
- : FRAXINUS EXCELSIOR. 
ANNUAL INCREMENTS, 
Annual! Girth 
Total. Av. | at last. 
No in List. 
"1888. | 1889. | 1890. | 1891. | 1892. | 1893. | 1894. | 1895. | 1896. | 1897. 
20 § 735 1:05 | 14°70 
$0 § 4-55 
45 | 4°85 121 | 18-25 
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This species was not observed in the first decade. In the 
second the two very young trees, Nos. 23, 75, of nearly the same 
girth, and growing in the same circumstances in the South 
border of the Arboretum, fared so differently that No. 23, with 
an average of 1°05, grew at nearly twice the rate of No. 75. 
Both were transplanted during the decade, No. 23 twice. No. 
2, a somewhat older tree in the West border, had a rather better 
rate than No. 23, or 1°21. The ranges were moderate, ‘85 to 
1°40, °45 to ‘65, and 1°10 to 1°30. 
FRAXINUS ORNUS, 
This flowering Ash, a graft on a two-foot stool of the common 
Ash, and a transplant from the older Garden of 1822, was a 
handsome and flourishing tree about six and a quarter feet in 
girth in 1878, and grew at the rate of ‘41 in the first decade. 
It still looks fairly well, but girth-increase almost ceased in 
the serond decade, the total being less than an inch. The 
girth in 1897 was 80°30, and that of the stool at its narrowest 
_ 107°50, 
