The primary variables which govern the angle of outflow and contraction coefficient for a nozzle with inclined upper lip are shown in Fig. 1. Information given in Figs. 2 and 3 was derived for a nonviscous, ideal fluid and can be used to predict high velocity outflows of dilute fiber suspensions in water, provided that the effects of gravity and surface tension are small and the flow is unobstructed for a distance of several times the slice opening b.