author - "William Harmon Norton"

neralogical andpaleontological nature, and by confining the field of view almostwholly to our own continent, space has been obtained to give towhat are deemed for beginners the essentials of the science afuller treatment than perhaps is common.It is assumed that field work will be introduced with thecommencement of the study. The common rocks are therefore brieflydescribed in the opening chapters. The drift also receives earlymention, and teachers in the northern states who begin geology inthe