44 KERRY WOODS. 



As a basis for a survey, this number of determinations is, of 

 course, far too small, but it forms, nevertheless, an excellent guide 

 for the immediate neighbourhood, and to enlarge the scope of the 

 survey all that is necessary is to extend the observations in all 

 directions. Once the applicability of a yield-table to a district 

 can be proved, it is possible to utilise as a check on the work the 

 height-growth of trees in groups which are too small for accurate 

 volume determinations. 



It is found in the field that variations in quality of locality are 

 so rapid that it is impossible to map land rapidly and effectively 

 into five grades. Three grades are sufficient for the purpose, 

 and might be called "poor," "medium," and "good," with probable 

 soil rentals in this district for forestry purposes of 45., los. , and 

 155. per acre. 



As "poor " may be designated the flat tops of hills up to 1,500 

 ft., or even 1,530 ft., steep west and south-west slopes under full 

 exposure, and north slopes of 1,550 ft. to 1,600 ft. where well 

 protected. Under " medium " quality come north and east slopes 

 of from 1,250 ft. to 1,500 ft., and west and south-west slopes of 

 from 1,000 ft. to 1,400 ft. where sheltered by hills to windward 

 and not exposed to winds sweeping up valleys " Good " conditions 

 include land up to 1,250 ft. on sheltered east and north aspects 

 and at the bottom of sheltered valleys generally. 



" Good " land will carry larch, Douglas fir, and spruce if so 

 desired ; " medium " quality land, larch artificially protected by 

 shelter belts, as well as Corsican pine, but principally spruce; 

 and "poor " land, spruce only. 



No attempt is made, in the absence of reliable yield tables, to 

 calculate the financial results of growing larch and Douglas fir, 

 but it may be assumed from the general information available that 

 both species, and particularly the latter, will give better results 

 than spruce on " good " land. The spruce tables therefore indicate 

 the minimum returns which may be expected from forests on this 

 type of soil. 



Application of Results of a Survey to Afforestation Schemes. 



A survey of the type suggested answers the vexed question as 

 to what area of land in a given district would give a larger rent 

 under forest than under present methods of utilisation. It is 

 obvious that no adequate national scheme of afforestation can be 

 framed until the area of land ultimately to be afforested is known 

 with a fair degree of approximation, and that no scheme will 

 find public support unless supported by accurate data as to the 

 returns which may be expected. 



