Madeira spectroscopic: being a revision of 21 places in the red half of the solar visible spectrum with a Rutherfurd diffraction grating, at Madeira … during the summer of 1881 Q Science
Contributions to the natural history of Alaska. Results of investigations … in the Yukon district and the Aleutian islands; conducted under the auspices of the Signal service, United States Army, extending from May, 1874, to August, 1881 .. Q Science
Short papers on geologic subjects: Some new observations on Niagaran reefs in Illinois, by Heinz A. Lowenstam; The Chouteau formation of Illinois, by Thomas C. Buschbach Q Science
