First collected illustrated edition with drawings by Benett including 12 large chromotypography engravings. Hetzel publisher's boards known as "au globe doré", type 1 "au bandeau noir", spine with lighthouse and second cover of Engel type "h", all edges gilt, anthracite endpapers. Publisher's catalog O at rear. Spine very lightly sunned, headcaps slightly depressed without severity, boards lightly soiled, endpapers with small marginal lacks as well as two restorations using adhesive patches. Thomas Roch invents a revolutionary explosive. The United States government prefers to have him committed, rather than see him go to another power more inclined to bankrupt itself for this revolutionary explosive. This novel belongs to Jules Verne's dark vein, where he shows his concern about technological progress. Clovis Dardentor is one of the author's rare humorous novels, it is a vaudeville whose action takes place in Africa.