THE HORIZONTAL PLANE OF THE SKULL AND THE GENERAL PROBLEM OF THE COMPARISON OF VARIABLE FORMS

Abstract

an article by Mr. Hayford on 'Connection by Precise Leveling between the Atlantic and Pacific Oceans.'About twenty years ago I wrote to SCIEKCE in connection with precise leveling over the Alleghanies and the Roclry Mountains, and stated that it might be well to have a systematic determination of bench marks at stated intervals owing to the unrest i11 the earth's crust.