of planting Wafte Lands. - 349 
pipes, drains, conduits to refervoirs, piles under 
water, and all kinds of wood-work which is 
kept conftantly wet. The pipes which are laid 
under the ftreets of moft large towns, to convey 
the water, are generally of Alder; and indeed 
in all works of the fame nature, where it can 
be procured in fufficient quantity, it is pre- 
ferred toevery other wood. But it is much to 
be lamented, that the valuable properties of its 
bark fhould be fe little known, that in moft 
mnftances it is buried with the tree. The black 
dyers of cotton ftuffs know its value, and make 
much ufe of it; they purchafe it at the rate of 
feven to eight-pence the ftone, laid down at 
their dye-houfes. It is not chopped, but fold 
as it is ftripped from the tree, after it has become 
moderately dry; fo that there is no expence in 
chopping and cleaning it, as is the cafe with 
oak bark. It might be ufed to great advantage 
as an excellent fubftitute for many Woods ufed 
jin dying, which we have from abroad, and 
on which we expend confiderable fums.* 
A friend 
* «¢ The Koreki, a favage nation inhabiting the borders 
* of Ruffia, ufe deer-fkins and dog-fkins for their cloath- 
*‘ ing, which they dye with alder bark reduced to a fine 
s* powder, But their feal-fkins, on which they fet a 
s¢ higher value, they dye in a nicer manner. 
ue eo firft clean off the = which they do very 
* dextroufly 
