176 CHRISTISON—OBSERVATIONS ON 
Pinus sylvestris. The failure in this is remarkable, because 
the species can thrive in the Garden, as one tree in the Arboretum 
was 7 feet 10 inches in girth when cut down a few years 
ago. None now living are much over 4 feet. They have poor 
heads, and they have ceased to increase in girth. 
Pinus Murrayana. The best of two had a rate of 0°67 for ten 
years, and was’ cut down in 1897 when only 20 inches in girth 
and unsightly. 
Pinus Pinaster, a handsome infant, increased at the rate of 
o'80 for seven years, but for the next four it fell to 0°55, and the 
tree is now a scraggy weed. 
Pinus Lambertiana and P. Cembra. Two of each also proved 
utter failures. 
ABIES DOUGLASII. 
In my Paper of 1888 a full acount is given of the first tree of 
the tee in the Garden, the progenitor of all that are now in 
it. In 1837 it girthed 4 inches at 4} feet above ground. For 
the next 37 years its rate was fully an inch and a half, and in 
1878, when nearly 50 years old, the tree was nearly 54 feet in 
girth and crowded to the ground with branches. After the 
severe frost of 1879 it began to lose its handsome appearance; 
the increase never exceeded o'40, and it was cut down in 1887 
when 67 inches in girth, 54 feet in height, and according to the 
rings 55 yearsold. None of its descendants have at all equalled, 
or give promise of equalling it. 
N Girth, | " An. I 
o.| ist | 1887. | 1888. | 1889. | 1890, | 1891. : : ; ; . otal. “| lai 
ALS 1892, | 1893. | 1894. | 1895. | 1896. | 1897. |Total.| “ay,"| Jast ; 
66} 7:90 is -- | 1:20 | 1-25 | 1:10 | 1-10 | 1-45 | 1-00 | -95 | 105 | .. | 9-20 ! 1-14 | 1705 
6| 4:35 95 | 80 | 40] $5 | 65/100 /125! 90/130 1:15 | 85 [9°80 | 89 | 14°25 
7°80 s -» | 1:20 | 1:20 | 1°05 | 1:10 | 1-10 | 1:30 | 1-20 -95 | -75 |. 9°85 | 1°10 | 17°65 
None of these has ever recorded an inch and a half in a single 
year, a rate which their parent maintained for 37 years. No. 99 
already ‘has a scraggy look; No. 6 looks only moderately well ; 
and No. 66 has been transplanted, so that it remains to be 
proved how it will do. 
