Exhibit of Photographs of Mars

The photographs and transparencies which Professor Percival Lowell '76 will send to the international photographic exposition at Dresden as examples of the recent work of the Lowell Observatory may be seen by those interested at the Astronomical Laboratory on Jarvis street today and tomorrow between 2.30 and 4.30 o'clock. The exhibit includes spectrograms indicating the existence of water vapor in the atmosphere of Mars and transparencies of Mars taken at Flagstaff recently.