Mar, 1892.] THE BOTANICAL SOCIETY OF EDINBURGH. 325 



c. Monthly Proportion of Girth-increase in Coniferous Species 

 and Trees, individually. 



As in the Deciduous class, I have added to the younger 

 group a number of the older trees, twenty-one of the former 

 .'ind thirteen of the latter, thirteen species in all, appear- 

 ing in Table XII. The introductory remarks under the 

 same heading for the Deciduous group are applicable here 

 also. 



Table XII. Monthly and Half-season Percentage op Girtii- 

 Increase in Conifee.e of the Older and Younger Set. 



* Craigiehall Trees. 



f Trees of the older set. 



