7O TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 
lightly yield a hectolitre of resin (22 gallons, or 2¢ bushels), 
whereas it takes 59 of the stems that are being tapped to death 
to produce the same quantity. In falls for regeneration in the 
woods of 65 to 70 years old there are left on the average about 
8o.trees an acre, and in the 4 years of exhaustive tapping they 
yield about 19 hectolitres (418 gallons, or 524 bushels), z<., 
17 trees are required to furnish 1 hectolitre of resin. 
Space forbids the citation of details as to the extent and age 
of recent falls, the amount of material extracted, and the prices 
obtained, etc., which can have no great practical value for the 
British forester. What is noteworthy, however, is that down to 
1894 these plantations had always, from year to year, cost more 
than they brought in; but in 1895 there was the first small 
surplus of £134, and this has been steadily increasing till it 
reached nearly £20,000 in 1905; and in future years, as a much 
larger proportion of the woods become mature, the net revenue 
will increase proportionately. Although the first final falls in the 
Mont-de-Marsan Inspection, begun in 1gor, had to take place in 
woods ranging from 23 to 63 years at the commencement of each 
period, yet the annual gross income from these 56,000 acres 
amounted to £61,600, and must incfease largely from year to 
year—and all the more because the local value of both the wood 
and the resin have been. steadily rising during the last 7 or 8 
years, timber having increased by 50 per cent. since 1898, and 
oil of turpentine by 175 per cent. since 1895. 
Formerly one of the most desolate and sterile districts in France, 
these coast tracts, covered with Maritime Pine, are now, thanks 
to the work initiated 120 years ago by Brémontier, traversed by 
roads and railways, and dotted over with saw-mills furnished 
with all the latest machinery and appliances for converting logs 
into planks, parquet-boarding, panelling, etc., and have uplifted 
the whole region into a highly prosperous condition, with profit- 
able industries firmly fixed on solid foundations. 
It seems to convey a lesson to Britain, if Britain is minded to 
consider the whole matter attentively. We have our coal-mines, 
which alone in the future will require more pit-wood than we are 
ever likely to grow within the United Kingdom; and unless we 
form extensive plantations soon, the price of pit-wood may, in the 
course of the next 20 to 4o years, rise so high as greatly to in- 
crease the cost of coal. But the pith of the lesson seems to me 
to be that any great national scheme of planting in England, 
