468 Mr Charles E. Hall on Tree Measurements at San Jorge. 



Perhaps tlio most remarkable facts brought out are — 

 First, As regards the deciduous chiss, the variety of months 

 in which the different species attain their maximum increase 

 in girtli ; and the apparent decrease that takes place in all 

 of them in May. 



Second, As regards the evergreens, a similar variety in tlie 

 months of maximum increase and the continuance of growth 

 through the winter, — in marked contrast to the absence of 

 growth in evergreens during the six coldest months at Edin- 

 burgh, as proved by Sir Eobert Christison {Trans. Bot. Soc. 

 Ed., 1879, p. 398). It is true that more frequent measure- 

 ments might show that the evergreens do take a brief rest 

 at one time or another during the winter ; but, at all events, 

 they all increased somewhat in the course of each winter 

 month. 



Incidentally we also learn the very different rates of 

 annual increase in girth of the different species. 



I do not think I can note down any additional facts, and 

 at present refrain from attempting to derive effects from 

 causes. 



