It was reasonable to conjecture that the metric has negative curvature. The main purpose of the work is to verify that the Ricci curvatures are indeed negative. The proof is by explicit computations. (Author).
... Valerian , is of a pale brown tending to yellow ; and is compofed of thicker and more naked fibres . The root of the Heath Valerian is firm and tough ; the root of the water kind is tender and more eafily broken . The Heath Valerian ...