vi, [2 errata], 294 pp. (8vo) original blue cloth, spine lettered in gilt. First American Edition and First Edition in English.

Translated by Mark W. Harrington and William J. Hussey. Dziobek was professor of higher mathematics at Charlottenburg. This copy with the ownership signature of astronomer C.A. Young on front free endpaper and that of chemist Frederick G. Keyes on title page. Also with Keyes ink stamp on title page and rear endpaper. Ex-library from the Massachusetts Institute of Technology.