The construction of timber, from its early growth : Explained by the microscope, and proved from experiments, in a great variety of kinds: in five books. On the parts of trees; their vessels; and their encrease by growth: and on the different disposition of those parts in various kinds; and the particularities in their vessels. With figures of their various appearances; of the instrument for cutting them; and of the microscope thro' which they were viewed. By John Hill, M.D. member of the Imperial Academy.