290 



TRANSACTIONS AND PROCEEDINGS OF 



[Sess. 



P. fastigiata. The second half-season greatly pre- 

 dominated in both, particularly No. 76, in which the pro- 

 portions were as 24 to 7G. In 1891 the two grew only 

 9 p.c. in the first half, showing a great falling off from the 

 average 29 p.c. ; but in 1888 they grew no less than 45 

 p.c. in the first half, and as the annual amount was below 

 average there must have been a failure in the second half. 



August was the best month in No. 76, with an average 

 annual amount of 0'44 and p.c. of 38, July being close up 

 with 0"40 and 34"5. But July was decidedly the best in 

 Xo. 87, with 0-36 of amount and 34 p.c. The April 

 growth was inappreciable, and that of May and September 

 insignificant. 



P. alha. The preponderance of the second half-season 

 was not so marked as in P. fastigiata. June was the best 

 month, with 40 p.c, a remarkable amount, as there was no 

 increase in May in any year of the five. But the 

 results are probably abnormal, as the tree is not very 

 thriving. 



Caepinus betulus. 



The half-season increase in both the young trees was 

 greatest in the second period, although not by much in 

 No. 86, and in the older tree the periods were almost 

 equal. 



June, with an annual average amount of 0*23 and p.c. of 



