Paris: Charles Mendel, 1897. First edition. Tall 8vo., viii, 391 pp.185 figures in text. Original printed wrappers, which are lightly foxed on the front wrapper only. Slight crease at the tips. A very good copy. Item #53678
The most complete source on all forms of optical projection. A second volume was published in 1902.
Roosens and Salu No. 9031.