The landed gentleman's useful companion, or, A sure and easy method of improving estates : by plantation of oak, elm, beech, birch, platanus ... wherein is demonstrated, the necessity and advantage thereof : with their manner of raising, cultivating ... together with an appendix, of the mensuration of timber ... likewise geometrical rules for the true mensuration thereof ... the whole being founded on above thirty years experience, and now first published for the benefit of the publick /