in a purely industrial laboratory. It means a large elaborately equipped and heavily staffed laboratory engaged largely in work which for many years will be unremunerative, and which for a considerable time after its foundation will obtain no results which can be applied by the manufacturer." While Dr Rosenhain in the lecture already referred to takes as an instance the case of a series of alloys which is being studied by an investigator interested mainly in theoretical metallurgy; he works with pure metals or metals as nearly pure as he can get them, and finds that one alloy of his series has some specially noteworthy properties. He may call the attention of a manufacturer to these and suggest that the alloy might have valuable industrial application. Much, however, remains to be done before this can be realized; the pure materials of the investigator are not available in
