THE GIRTH-INCREASE OF TREES. 95 
although in the latter the failure continued from season to 
season. 
On the whole, therefore, it seems probable that the normal 
conduct of the very young British Oak is to throw its growth 
mainly into the second half of the season. 
None of the Oaks yield remarkably large individual scores. 
The highest records in young and old are—April, 10; May, 30; 
June, 30; July, 40; August, 40; September, 10. So that there 
is not a single instance in any month of half an inch increase. 
NO. 15.—QUERCUS CERRIS. 
| Girth in 
h 
Year Apr. | May. | June. | July. | Aug. | Sept. ae pb ee | oF : 
| Observations. 
oe 
1892, | 10 | 25 | 25 | 15 35 40 
1893. | 10 | 10 | 2 | 18 | 10 45 25 
1894, | 5 5+ 10 | 80.1 6 62) 40 
1805. |. & | 10 |-15 | 20 | 16 5 30 40 
1896, 5 | 30 | 10 | 20 5 45 25 
1897, 5 AG bet Eb 30 35 
Total, | 30 | 75 |100 | 180 | 65 |° 10 | 205 205 
Ls 
PC. - | 7:3 | 18:3 | 24-4 | 31-7 | 158 | 25 50 50 10 
Two WeE.LL-GROWN TREES, 1884-87, 1887-91. 
Pc. «| 2| | u 34 | 20 e | 40 | 60 | 63, 43 
Although the half-season growths are exactly equal in No 15 
On an average, they vary exceedingly from year to year; 
sometimes the first half greatly predominates, but in other years it 
is the reverse. This is probably due to youth, as in the two well- 
grown trees, one of which was at Craigiehall, the predominance of 
the second half-season is quite pronounced in every record. 
The discrepancies between the:young No. 15 and the two 
well-grown trees are not so great as between the young No. 10 
