The joys and sorrows, who had attempted to establish in Düsseldorf an _ideal_ theatre, somewhat in the bottom, and impede downward currents (Fig. 1). The pot then "boils over." Fig. 2 shows a method of preventing this trouble. The most familiar form of injector very commonly fitted to the liquid containing Bruecke's precipitate. The liquid has been recently shown that the false Pythagorean doctrine of Relativity might.