FORESTRY EXHIBITION AT PEEBLES. 89 
Japanese larch, Norway spruce, Weymouth pine, Scots pine, 
and Douglas fir (Colorado and Oregon forms). The result of four 
years’ growth showed that the lead was decidedly being taken 
by the Oregon Douglas fir and the Japanese larch, the European 
larch following up closely. He also sent samples of mature 
round larch and spruce timber from poor soil at 1100 feet eleva- 
tion. Some of these stems measured up to too feet in length, 
and ranged in cubic contents (quarter-girth measure) from 50 feet 
to 75 feet each, timber to 6 inches diameter only being measured. 
From a young plantation of pure larch seventeen years old, on the 
same class of soil, he sent sample stems having an average height 
of 29 feet and a stem diameter at 4 feet 6 inches of 5} inches; 
and from a mixed plantation of larch, Douglas fir, spruce, and 
silver fir seventeen years planted, on similar soil, he sent average 
sample stems which showed the following measurements :— 
Diameter at Diameter at 
Height. Surface of 4 ft. 6 ins. 
Ground. High. 
Douglas fir (green form), 38 feet g inches 6% inches 
Larch (European), : 46.) 5, Soe 64», 
Spruce (common), : wae Cae 44 yy 
Silver fir(common), . 2374 ae 4 Be 
The Society’s collection of photo-micrographs of timber of 
British forest-trees attracted a good deal of attention, as did also 
a similar collection of eight hundred British and foreign ones 
exhibited by Mr James A, Weale, timber merchant, Liverpool. 
Mr Balfour of Dawyck, Peeblesshire, had a small but very 
interesting collection on exhibition. He showed twenty-four 
distinct species of introduced conifers in pots, specimens of 
timber illustrating results of pruning, larch plants damaged by 
the pine weevil (/y/obius abietis), and a section from a large 
branch from one of the original larches planted at Dawyck. 
This branch contained excellent timber, and measured 24 feet in 
diameter. But probably the most interesting part of Mr Balfour’s 
exhibit was that of the timber of three introduced conifers, 
namely, Douglas fir (Pseudotsuga Douglasit), green form, Adbzes 
concolor, and white American spruce (ficea alba). The timber 
was shown by complete cross sections of the stems and by planks 
taken from parts of the stems. The Douglas fir timber, and also 
that of Adies concolor, showed a remarkably large proportion of 
