XX 
Additions to the Library . 
Davenport. — Academy of Natural Sciences. 
Proceedings. Yol. II. 2, III. 1, 1879-80. 8°. 
Madison. — State Historical Society of Wisconsin. 
Report and collections. Yol. VIII, L877-79. 8 '. 
Milwaukee. — Nuturhistorisclier Yerein von Wisconsin. 
Jahres-Bericht, 1879-80, 1880-81. 8°. 
Ulrici, E. Die Ausiedluugen der Normanen in Island, Gronland und Nord 
Amerika im 9., 10. und 11. Jahrhundert. 8°. 
Minneapolis. — Minnesota Academy of Natural Sciences. 
Bulletin. Yol. II. 2, 3, 1881. 8°. 
New York. — American monthly microscopical journal. Vol. I. 3-12, II, III. 1, 2 
G, 1880-82. 
American Society of Civil Engineers. 
Standard time for the United States of America, Canada and Mexico. 8° 
Philadelphia. — Academy of Natural Sciences. 
Journal. Yol. IV, VI, VII. 2, 1824-37. 8°. 
American Philosophical Society. 
Proceedings. No 105, 1880. 8°. ■ 
Franklin Institute. 
Journal. Vol. CIX. 3-6, CX— CX1II, CXIV. 1, 1880-82. 8°. 
Poughkeepsie. — Society of Natural Science. 
• Proceedings, Oct. 1879— July, 1880. 8°. 
St. Louis. — Academy of Science. 
Transactions. Vol. IV. 1, 2, 1880-82. 8°. 
Contributions to the archaeology of Missouri. Pt. i. Salem, 1880. 4°. 
Missouri Historical Society. 
Publications. No. 5, 6, 1881. 8°. 
St. Paul. — Minnesota Natural History and Geological Survey. 
Annual report, VIII, IX, 1879-80. 8°. 
Salem. — Essex Institute. 
Bulletin. Vol. XI. 10-12, XU, XIII, 1879-81. 8°. 
Peabody Academy of Science. 
Memoirs. Vol. I. 5, 6, 1881. 
San Francisco. — California Academy of Sciences. 
Proceedings, June G, 1881. 8°. 
Lick Observatory. m 
Report of observations made on Mt. Hamilton. Chicago, 1880. 4°. 
Savannah. — Georgia Historical Society. 
Anniversary address, Feb. 14, 1881. S' 5 . 
Washington. — United States Geographical Survey West of the One Hundredth 
Meridian. 
Report. Vol. II — VII, 1875-79. 4°. 
United States Geological Survey. 
First annual report, 1880. 8°. 
United Slates Naval Observatory. 
Astronomical and meteorological observations. 1876, pt. i, and appendix 
i, iii; 1877. 4°. 
Worcester. — American Antiquarian Society. 
Proceedings. No. 74, 75; new series, vol. I. 1, 3, 1879-81. 8°, 
