52 CHRISTISON—ADDITIONAL OBSERVATIONS ON 
reduced to 114. The removal of shrubs growing under and close 
to it, and the substitution of grass sods for the earth on which it 
stood, are the only ostensible causes, but seem insufficient to 
account for such serious results. 
FYKUS AUCUPARIA. “No-'79. 
Girth, March, 1887=0.274 mil. 
Trd Trd. 
| 1887-1891 } 1891 1892-1893 1894 | 1894-1897 | 1898-1901 | 
fia ee 23 331g | 208 85 54 Died 
Average, .. 24 a ves a u 135 
The rate—24 for the first five years—seems good for a tree 103 
inches in girth. It fell to 74 for two years after transplantation, 
rose to 21} for the next four years, but fell off for some unknown 
reason to 134 from 1898 to 1901, when the tree was again trans- 
planted ; but it never recovered, and died in 1894. 
PYRUS AUCUPARIA. ‘No. 77. 
Girth, March, 1888=0.176 mil. 
Trd 
1888-1894 1895-1896 1897 | 1897-1903 | 1904 1905 1906 
Total; - 112 14 9 19 1104 134 54 6 
Average, x 16 5 2° 154 8} 
Only 7 inches in girth when first measured in 1888, this rowan 
had the low rate—compared with No. 79, a rather older tree—of 
16 for seven years. Transplantion reduced it to almost nil in 
1895, but in 1897 it reached its maximum—1g—and for the 
period 1897-1903 the tree resumed almost exactly its rate, before 
removal, of 153. In 1904, however, it fell to 134, and in 1905-1 
_to5$and6. The cause is not evident, unless it was disturbance 
of the ground, due to removal of trees and shrubs near it. The 
tree looks healthy, but has a rather small head of foliage. 
