This is an OCR edition without illustrations or index. It may have numerous typos or missing text. However, purchasers can download a free scanned copy of the original rare book from the publisher's website (GeneralBooksClub.com). You can also preview excerpts of the book there. Purchasers are also entitled to a free trial membership in the General Books Club where they can select from more than a million books without charge. Description: Vols. 6-44 include Proceedings of the 1st-39th, 1920-58 annual meeting of the society.; Subjects: Mineralogy; Nature / Rocks