CONTENTS OF VOLUME I. 



I. A Catalogue of the Species of Mosses found up to the present 



TIME ON THE NORTHWEST COAST OF THE UNITED STATES, AND 



especially in California By Leo Lesquereux. 



I Published January, 1868.) 



II. The Natural System of Volcanic Rocks By Ferdinand, Baron Bichthofen. 



(Published January. 1868.) 



A H9f 



