458 



Mr Charles E. Hall on 



These last three sorts all grow on undisturbed enclosed 

 ground. 



2. Older Trees. 



A large Paraiso and a large Eobinia, in an avenue (partly 

 for the sake of finding out when such trees really should be 

 cut down) ; an acer (? species), companion of the specimen 

 previously referred to ; and a cottonwood, or Carolina poplar 

 {Popidus angulata). This last tree grows in ground periodi- 

 cally forked over. 



I now present some tables showing the average monthly 

 growth in millimetres for a term of five years, with the 

 percentages of growth per month. 



Table No. I. — Monthly Increase in Gi7'th and Percentage of Increase 

 for each Month in eight Evergreen Trees, between 8^ and 15 years 

 of age, for five years, from I2th January 1885 to 12th January 

 1890. 



Table No. I. represents the monthly growth and per- 

 centage of growth of four species of evergreens, founded on 

 the total growth of two trees of each species. In each 

 species, July ( = English January) is the month of least 

 growth ; the month of greatest growth is January (14J per 

 cent, of the annual amount) for Acacia melanoxylon ; for 

 Eucalyptus, March and April (11 per cent.); for Finns 

 pinea, September (16 per cent.) ; and for Acacia mollissima, 

 November (14 per cent.). 



