621. Browne, J. Ross. Report of. On Mineral Resources of States and Territories West of the Rocky Mts. 674 pp. Wash., 1868.$1.50

622. Buffon. Histoire Naturelle des Mineraux. 9 vols. 16mo, calf. Aux Deux-Ponts, 1790.$1.50

623. Canada. Reports of the Bureau of Mines. Printed by Order of the Legis. of Ontario. Illus. and maps, paper. Vols. quoted.

624. Bull, Marcus. Experiments to Determine the Comparative Value of the Principal Varieties of Fuel Used in the U. S. and Europe. Boards, uncut, plate. Phila. and London, 1827.$1.25

625. California Mine Document. Fremont, Capt. John Chas. Original Parchment Articles of Agreement, made Nov. 10, 1851, between Capt. J. C. Fremont, of the City of San Francisco, California, and Solomon Alter, John L. Newbold, John M. Lisle, Chas. Schaffer, and Francis N. Buck, of Phila. This Agreement recites that said Fremont for the sum of $250,000, “hath demised, leased and let two certain Lots, Parcels or Measurement of Mineral Land,” etc. The Document then describes this Land, first as the “Heap and Sargent Location” on the Mariposa River. Also, another known as “The New Britain Location,” situated between the Mariposa and the Ave Maria Rivers, together called the Mariposas, purchased by Fremont from Don Juan B. Alvarado, Ex-Gov. of California. The term of this Lease is for Ten Years with Privilege and Extension up to the year 1871. This Parchment document, measuring 25½ × 21½ inches is duly signed and witnessed by all the parties above named. On the back is sketched a map in colors of the above Purchase, showing the Location of all the Houses and Tents in the Town of Mariposas, and of Old-town, on the opposite side of the Mariposas River. It states that the Large Tract was granted by General Micheltorena, Gov. of California, to the aforesaid Alvarado, Ex-Gov. It further shows the “Locations of the Philadelphia and California Mining Co.” This map was filed and recorded by R. S. Miller, Recorder of Mariposa Co. It was “drawn by A. Zakreski, Clay St., above the Plaza.” The Possession of this Lease may afford considerable satisfaction to the present owners of this Old Claim!$110.00

626. Carpenter, G. W. Mineralogy of Chester Co., Penna., with Account of some of the Minerals of Delaware, Maryland, etc. Boards, 12mo, 19 pp., uncut, very scarce. This rare paper was printed as an Appendix to Carpenter’s Essays on Materia Medica. Phila., 1831.$1.50

627. Cramer, Jno. A. Elements of the Art of Assaying Metals. Calf, illus., 470 pp. London, 1741.$2.00

628. Dufrenoy, A. Traite de Mineralogie. 3 Vols. Text and Vol. of plates, half calf, very full on crystallog. and microscopic petrog. 4 vols. Paris, 1844.$2.75

629. Duport, St. Clair. De la Production des Metaux Precieux au Mexique, considerée dans ses rapports avée la Geologie, La Metallurgie et L’Economie Politique. Half calf, many folding maps and illus., B. Silliman’s autogr. copy. Paris, 1843.$3.00

630. Emanuel, Harry. Diamonds and Precious Stones, Their History, Value and Characteristics, etc. New Table of the present value of Diamonds. 12mo, uncut, name on title, illus. London, 1867.$1.75