LEGUMEN, a rod; a species of feed-vessel which has two valves or external openings inclosing a number of seeds that are fastened along one suture only. In this last circumstance the feed-vessel in question differs from that termed by botanists filiqua, in which the inclosed seeds are fastened alternately to both the sutures or joinings of the pod. The feed-vessel of all the pea-bloom or butterfly-shaped flowers, the diadelphia of Linneus, is of this pod-kind. Such, for instance, is the feed-vessel of the pea, vetch, lupine, and broom. LEGUMINOUS, an appellation given to all plants whose fruit is a legumen. LEIBNITZ (Godefrey-William de), an eminent mathematician and philosopher, was born at Leipzig in Saxony in 1646. At the age of 15 years, he applied himself to mathematics at Leipzig and Jena; and in 1663, maintained a thesis de Principiis Individuationis. The