PLANTING FOREST TREES. 
23 
to touch each other, and must he frequently looked over, in order to 
remove those which may shew fresh symptoms of decay, until No¬ 
vember, the time for replanting. Old Tan, well decayed and pul¬ 
verized, may be substituted in the compost above described, if leaves 
cannot be obtained; and when the compost has been in use for about 
six years, it will be necessary to renovate it by the addition of some 
fresh’materials. 
In the first number of the Register, you mention that you have 
had some sashes glazed on Curtis and Harrison’s plan, and that you 
will report to your readers how it answers. I hope you will do so, 
and also that you will let us know how it has been found to answer 
in hothouses and greenhouses. 
Sussex, November 13 th, 1833. 
ARBORICULTURE. 
ARTICLE VIII.—PLANTING FOREST TREES, 
BY JOHANNES O’NEATH. 
The Larch .—The annual increase of this tree in circumference, at 
six feet from the ground, is one inch and a half, on an average of 
several years; and of Larches of different ages, from ten years to 
fifty, that is, provided they have been thinned and pruned annually. 
An acre of land, when planted with Larches, pays every year from 
twenty-four to twenty-seven years’ growth, a rent, by the increase of 
the wood, of £3 5s.: what rent an acre of land would pay when the 
Larches were forty, fifty, or sixty years’ old, cannot be accurately 
known, except by an actual admeasurement; but there is some reason 
for guessing, that it would at fifty years, for the first planting, pay a 
rent of £15 a year ! 
Planting Trees .—He w ho plants trees upon his paternal estate, 
thinning and pruning them judiciously, repays a debt to his pos¬ 
terity, which he owes to his ancestors. A gentleman whose lands 
were more extensive than fertile, used to plant one thousand trees, on 
the birth of every daughter, upon his waste ground, which were on 
an average worth £ 1 each, upon her coming to age ; thus enabling 
him to give her a fortune of £1000 without any extraordinary 
economy on his part, the regular thinning of the trees every year, 
with barking, &c. paying off all the current expenses, besides yield¬ 
ing him a small rent for the land. In the year 1758, ninety-two Fir 
Trees were transplanted upon a piece of ground, about three quarters 
of an acre in extent. The land was waste and poor; no extra 
