736 EDITORIAL 



principles of that portion of scientific and philosophic geology that 



is applicable to formations of industrial value. Contributions to 



this may be sought, as has been the endeavor of this Journal, through 



attempts to develop the basal science and philosophy upon which all 



formations depend, or it may be sought by a more selective effort, 



such as the new journal essays. 



We extend cordial greetings to our new colleagues and wish them 



the success we are sure they will merit. There is a peculiar personal 



pleasure in extending a managing editor's welcome to the son of 



Roland Duer Irving, our most intimate geological friend and colleague 



during the years of youthful endeavor to find a place among geological 



workers. 



T. C. C. 



