Hand-book of mineralogy : determination, description and classification of minerals found in the United States Q Science
The Verbenaceæ of the Malayan archipelago : together with those from the Malayan peninsula, the Philippines, the Bismark-archipelago, and the Palau-, Marianne- and Caroline-islands … Q Science
Star atlas containing maps of all the stars from 1 to 6.5 magnitude between the North Pole and 34 south declination, and of all nebulae and star clusters in the same region which are visible in telescopes of moderate powers. With explanatory text by H.J. Klein. Translated by Edmond McClure Q Science