THE GIRTH-INCREASE OF TREES. 79 
TABLE VII.—Average Annual Increase in Girth in the five best consecutive years 
(Column A), and in the best single year (B),in Trees of different species at 
different sizes ; (C) gives the Girth at the middle of the five years’ period. 
ae e Hf cigs oF ai 
Fo gi] o a © al Fy x 
N Sagi fe) & eel ee] 2 
fo) Species. 2s Py a 8 s No. Species. F g. = 3 S 
Babl ee | 3 e2| om | 2 
sosia | & bd eee 
a 6 a ray 
ee At Bice 8 : A Cc 
Under one foot in girth. One to two feet in girth 
: —continued. 
19 | Salix sp. 168 240| 6 
| 12] A tri 1204 34 16 
22 | Prunus Padrs 1:34 | 145] 11 enon id gross 23 
| 19 | Crategus Oxyaconth 117 | 165 | 14 
9 | Populus fastigiata .. 124/135] 
. 70 | Quercus robur 1:01 | 1°20 | 13 
61 | Quercus rubra 118 150} 9 , 
9 | Tilia europea 83} 100} 13 
80 | Esculus Hippocastanum.. | 1°17| 135/ 10 ce 
2 8 | Pyrus communis 80} 95) 13 
14) Robinia Pseudacacia 1:00 | 140; 9 "g ool eet ia 
Pyrus Aucuparia s "95 
79 | Pyrus Aucuparia 95} 110} 10 a i 
23 | Fraxinu Isior .. 91} 115] 10 Two to four feet in girth. 
21 | Cytisus Laburnum ., 90 | 1:05| 11 | 54) Quercus conferta 1°87 | 2°30! 40 
67 | Acer Pseudoplatanus “86 | 1°05 9 |93 | Ulmus montana 169 | 205 | 27 
88 | Alnus glutinosa 80 | 120] 11 | 40] Quercus conferta 146 | 1°80) 47 
86 | Carpinus Betulus .. 78| 1:00) 9 | 16 | Crategus Oxyacantha 58} $5} 41 
16 | Quercus Ilex 68 | 85] 7 $45) Quercus Ilex 6} 70) 45 
15 | Quercus Cerris ‘67 | ‘70! g 441} Carpinus Betulus 49] 55) 47 
6 | Ulmus campestris . 60}. 75 | 
From four to six feet in girth.| 
One to two feet in girth, 63 | Quercus Cerris ‘70 | “8 | 6 
19 | Salix sp. 2:97 | 400 19 | 41/ Carpinus Betulus .. 43) 55) 51 
55 | Quercus conferta 1-71 | 180} 19 
From six to seven feet in 
93 | Ulmus montana 1°62 | 180} 16 girth, 
74 | Acer Pseudoplatanus 1°47 | 1°55) 16 | 7} Fagus sylvatica 1-15 | 120] 77 
20 | Fagus sylvatica 1-45 | 170} 19 | 7| The same tree 100} 120 84 
22 | Prunus Padus 1-26 | 155 | 15 | 4| Castanea vesca ‘97 | 110; 73 
3 | Tilia europcea 1-24 | 145 | 17 | 4| The same tree 83 | 100] 83 
78 | Betula alba wf 283 | 2°45 | 16 6 | Liriodendron tulipifera ..| 63 | ‘60| 84 
4 | Esculus Hippocastanum .. | 121 | 1°40/ 15 | 2 | Tilia europea 39; 65) 76 
2| Fraxinu Isi 1-21 | 1:30} 16 | 2| The same tree 35 ad 
respective best single years yielding 230 and 205. Their 
average girths were forty and twenty-seven inches. 
It would be tedious to speak of all the trees in detail ; suffice 
