60 CHRISTISON—-OBSERVATIONS ON 
soil of the Garden seems rather favourable to the walnut, as a 
very handsome specimen, four feet nine inches in girth, recently 
transplanted, promises to do well. 
SALIX SP. 
a Annua ANNUAL INCREMENTS r he Gis 
se Ist’ | | Total. ras a 
= Decade.) 1898. | 1889, | 1890. | 1891. | 1892. | 1893. | 1894. | 1895. | 1896. | 1897. | 
aaa 
19 “90 | 1-80 166 | 165 2°40 | 2-20 | 2°65 400 3°00 | 2°40 25:25 | B82 26°25 
This Willow, on the South side of the pond, but on dry 
ground, was measured in its infancy at three feet above ground, 
the point being raised to five feet when practicable. It was at 
first only an inch and a half in girth, and is now about two feet 
at the five-feet mark, having grown twenty-three inches in ten 
years, at the rate of 1°68 in the first quinquennium, and 2°97, or 
all but three inches, in the second. The increases of four inches 
in 1895 and three in 1896 are quite unequalled in other species 
in all my twenty years’ observations. 
POPULUS FASTIGIATA. 
Wt Adina ANNUAL INCREMENTS. : 
| Rate, Ann. | Gitth 
= zat : Total. Av. | ,2t 
1g |Pecade, 1a8e. | 1889. | 1£90. | 1891. | 1892. 1893. | 1894. | 1896. | 2896. | 1897, = 
76 16-195 41°35 75 245 “00 50 ‘95 jdying| ... 7-00} 1:17 | 15:05) 
87 “80 | 1°35 | 1°00 "45 ‘80 I dead 3 4°40| -88 | 12°65 
ee 1:25. § 1°35.| 1°05 | 1:30 ‘80 65 | 4:95 | 1°24 | 16:10 
Three of this species were under observation in the second 
decade, but the careers of Nos. 76 and 87 have been ended by 
transplantation followed by death, and that of No. 9 by trans- 
plantation threatening death. The average rate in the few avail- 
able years was 1°18 in No. 76, and 1°24 in No.9, and if we deduct 
the years 1891 and 1892 from No. 87, when it was evidently 
failing, its rate would be 1°05, or not much less than in the 
others, 
