200 BORTHWICK—THE DIAMETER- 
TAXUS. TILIA. 
Tape Borer. | Tape 
40 : - : Sg 00 : 
60 - - - "50 50 - - 
55 : ; : ‘47 40 : 
55 - "40 25 . 
45 : $ : 31 20 Z 
45 : : = ‘40 40 : : 
45 : ‘40 a : 3 
40 - - - “3 fore) - - 
55 : 2 . Es 30 = : 
20 : = = "34 35 : 
4°55 3°87 2°75 
455 
3°87 
Circum. Diff. = - 68 Circum. Diff. = — - 
Dian. Dif." - ee Diam. Diff. = 
Mean Annual Diff. = 022 | Mean Annual pigZ = 
ULMUS. 
Tape. Borer. 
ie 4 - - - . - 1°66 
1°80 - - - - - - 2°16 
at bo = : : . 1°72 
150 - - - - - - 1°82 
I°30: - - - - ~ em 1°34 
270 * - - - - - 1°57 
1°60 - - - - - = lg 
eOy = = : z : a 0°94 
7) *) os eee 57 
ote : - z : : 144 
16°55 15°41 
16°55 
15°41 
Circum. Diff. = = - - - I'l4 
Diam. Diff. = - - 38 
Mean Annual Thies - - 038 
