THE GIRTH-INCREASE OF TREES. 69 
TABLE IV.—Old Trees, from about 6 feet to 74 feet in Girth. 
Decade 1878-87. 
No, j Girth at | annual | , Least Greatest Number 
List mone servation.| te. lin's Year.| ina Year. | Years 
7 Fagus sylvatica Pe eee “82 1°03 65 1:20 ten. 
8 Do. ie Be “70 “09 “90 1:20 ten. 
4 Castanea vesca ap se "80 “94 ‘75 1:10 ten. 
6 Liriodendron tulipiferum _... 82 “60 30 1:00 ten 
3 Fraxinus Ornus a ras “80 “41 “20 ‘75 ten. 
2, | PRS OUROpM@A 5. ue ce 78 “30 00 65 ten. 
TaBLE V.—Decade 1888-97. 
7 Fagus sylvatica ere “90 "85 “60 1:20 ten. 
8 Do. Piegae ce 80 92 “80 110 ten. 
4 Castanea vesca pee ay 87 “69 *40 1-00 ten. 
6 | Liriodendron tulipiferum _... "86 “48 “25 80 ten. 
2 Tilia europea .. os = 81 ‘27 “00 50 ten. 
TABLE VI,—Rates of Old Trees at Craigiehall, Cramond, for comparison. 
10 | Quercus Cerris oe oe 92 70 125 | eight, 
20 | Fagus sylvatica Pee 81 60 95 | eight. 
16 | Quercus robur i oe 69 “45 1:00 | eight. | 
5°| Betolaalba =; c.- r= | | oO ol ahh 
6 Fraxinus excelsior ... ... | 1°44 37 “25 70 ten. 
7 | Acer Pseudoplatanus ... |_-:1°80 “40 20 "bb ten. 
I. TREES UNDER 15 INCHES IN GIRTH. 
Annual rate.—These infant trees have been under obser- 
vation for from three to eight years. Fully one-half of the 
twenty-three trees and of the nineteen species had an annual 
rate of an inch or upwards, the Willow being facile princeps 
with a rate of two inches for five years, when it grew in girth 
from three to thirteen inches. The Wynn Elm follows with 
