1860 28 p., 10 col. lithographed pls, roy. 4to (25 x 31 cm), disbound (no covers). Unopened copy. A few plates with some foxing, a little bump in blank top corner of plates (but nothing serious). Published in: Denkschriften der Mathematisch-Naturwissenschaftlichen Classe der Kaiserlichen Akademie der Wissenschaften. Rare.
1860 28 p., 10 col. lithographed pls, roy. 4to (25 x 31 cm), disbound (no covers, plates loose). Unopened copy. A few plates with some foxing. Published in: Denkschriften der Mathematisch-Naturwissenschaftlichen Classe der Kaiserlichen Akademie der Wissenschaften. Rare.