Excerpt from Proceedings, 1928, Vol. 3
The balance of the mineralogist and his goniometer have, during those last fifty years, been sadly ignored and over looked by the geologist, who is ever and anon boasting that he studies in the field, and has no faith in the teachings of... mere hand specimens in the closet. That this is true, I quote from the first line of the first chapter of the last, and certainly the best book lately published on the subject, namely, J ukes' Manual of Geology, where he states, Lithology, or the study of the mineral structure of rocks, is based on 'mineralogy. In order to understand litho logy, however, eu acquaintance with mineralogy in general, though always useful, is by no means necessary, since the minerals which enter into the composition of rocks are very few compared with the whole number of minerals. But as regards these few minerals, it is their chemical compo sitiou, still more than their physical characters, which we have to regard in their lithological relations. It is there fore absolutely necessary to understand so much of che mical nomenclature and chemical laws, as shall enable us clearly to comprehend the precise meaning of this chemical composition.
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