Rensselaer Semi-Weekly Republican, Volume 40, Number 57, Rensselaer, Jasper County, 20 March 1908 — The Double Canals on Mars. [ARTICLE]

The Double Canals on Mars.

For the first time the much.discussed double canals on the planet Mars have been caught on a photogfapnic plate. Professor David Todd of Amherst College did it, 15,000 feet above sea level in the Chilean Andes, with his fine celestial camera, made by Gaertner of Chicago, especially for the college telescope, which has an object glass 18 inches in diameter, and is the largest ever used in the Southern hemisphere.