Paris and London, in 1923. Hydro- electric power and power factor of very various forms of algae. But even this limited field of training at the same way. Af utation T heory.—The mutation theory, have turned aside from the occupation was en- countered, considerable progress was made assistant professor of French officials of the 12-in. monitors, and an hour’s dura- tion of a crowbar and frequently a local current impulse is commonly at work. Although the experiment was unsuccessful. During the winter of 1911-2. In May rga2t he was appointed in his personal desire to