which he called " Orohellograph." In a few tional Weekly. words, it consists of a camera, the place of the ground glass ^ < » > » forming the base, and the lens looking up perpendicularly WATEB HEATEB FOB BATHS. to the sky. Over the lens is placed a silvered mirror, half The annexed engravings… … five or ten minutes will be found sufficient, and WATER HEATER FOR BATHS.-Fig. 1. New Tests for Milk. in winter from thirty to fifty for the printing. For the analysis of milk. Professor Lehmann, The prepared side of the paper must be then of Munich, proposes the following: A weighed quantity, The…
