Comments on C. Damolzeau's cyclograph, which was built and patented in 1889. Outlines the cyclograph's usefulness for topographic, cartographic, and surveying studies, because it takes panoramas of 360 degrees. A mechanically coupled-hard-rubber roller and elastically mounted take-up spindle move the film. Outside adjustable variable slit (0-19 millimeters) controls exposure. Transport rate would be similarly regulated. Cyclograph includes compass and mechanism to perforate and cut film. Camera assembles on spot and is made of mahogany and handmade brass. Data on the four models are included. -- AATA