Mar. 1892.] THE BOTANICAL SOCIETY OF EDINBURGH. 



285 



No. 24. Ahies Hookeriana, 0*59; Xo. 9, Cuprcssus Lmu- 

 soniana, 0-48 ; No. 14, Betmosjjora ohtusa, 0"44. Compared 

 with the others in the Table, these rates are low, and the 

 specimens, although healthy enough, are not very luxuriant. 

 The rate of an older Cypress at Craigiehall was 0'82. 



h. Range of Gnth-increase in the five years. 



This was comparatively small in Abies Loiviana, 1"50 to 

 1-95; in Abies grandis, 1"15 to 1'65 ; and especially in 

 Ahies Douglasii (3 years only), 110 to 1'25 ; and in 

 Araucaria imbricata, 0*55 to 0"65. It was specially large in 

 Thvj'a gigantea, O'oO to 11 5; in Larix euro;pcea, 0"70 to 1*75 ; 

 and in Betinosporcc obtusa, 0'25 to 0"60. 



c. Maximum Annual Growth in the Species. 



Although none of the 30 Pinace?e under observation 

 attained an increase of 2 inches in a single year at the 

 regularly measured point, two examples of Abies Loioiana, 

 Nos. 8 and 92, each came very near it with 1*95, and in 1890 

 No. 8 went beyond it to 2*25, at a higher point. 



The maximum years of Larix, 1"75, and Abies grandis, 

 1*65, were also high. On the other hand, none of the last 

 four in the Table came near an inch in their best year, 

 Abies Hooheriana attaining 0*70, Araucaria imbricata 0'65, 

 Cupressus Lawsoniana and Betinospora obtusa 0*60 each. 



Table III. Annual Eate and Range of Conifers. 

 Inferior Group. 



It is unnecessary to say much of these. Pimis Pinaster 

 for the first two years had a rate of 0-95, probably good 

 enough for so young a tree, but in the next three years it fell 



♦Perhaps not a true species, but a variety either of Thuja gigantea or 

 occidentalis. 



