108 CHRISTISON—OBSERVATIONS ON 
The two agree in giving a slight or moderate predominance to 
the second half-season and in the monthly details, except that 
the distribution is more equable in the earlier example, in which 
the increase is remarkably large at the end of the growing 
season, the amount for August being greater than in July, and 
that for September almost unprecedentedly high. 
The highest scores are April 15, May 15, June 4o, July 35 
August 45, September 25. 
No. 1.—CYTISUS LABURNUM. 
| Girth in 
Year. | Apr. | May. | June.! July.| Aug. | Sept. eae amg —— ” 
Observation, 
1892 10 20 25 30 30 55 
1893. 10 20 15 10 30 25 
1894. & LB) 0 ks eh Bel 50 | 
1895. 10 20 10 5 30 15 
Total, 5 35 80 85 55 5 120 145 
PLC, 19 | 182 | 30°2 | 32°0 | 20°38 19 45°3 54°7 Bae 
A Younc TREE, 1887-91. 
a 8 | t | 14°5 | 24°5 | 25°5 20 85 | 46 | 54 | 9 
The half-yearly results in No. 1 in its two years of greatest 
increase are much in favour of the second period, but the reverse 
is true of the two less prosperous years, the general result being 
still in favour of the sécond period. These results are confirmed 
by the other tree in every particular. The erratic conduct in both 
has been too great to establish a law. The only marked differ- 
ence in the two trees is the more general distribution of the 
increase in the earlier tree, the percentage for April and 
September being unusually high. 
The highest individual scores are April 10, May 15, June 35, 
July 35, August 30, September 10. 
