Rayons cathodiques et rayons de Röntgen : Étude expérimentale
Jean Perrin's 1897 experimental study of cathode rays and X-rays, published in Paris by Gauthier-Villars for physicists and medical readers. The plates are line diagrams of circuits and apparatus: coiled wire solenoids, straight conductor rails, dashed field lines, arrows marking current direction, plus- and minus-signed terminals, and lettered points, printed black on tinted paper.
