Scientific amusements . slowly came to her moorings. This appear-ance is due to the presence of phosphorus in the tinyanimalculse of the sea. It is also observable in the femaleglow-worm, and the fire-fly. Phosphorus was discoveredby Brandt in 1669. Ii6 CHEMISTRY. It forms two compounds with oxygen—phosphorous acid, H,PO^, andphosphoric acid,H PO,. The com- 3 4 pound with hydrogenis well marked asphosphuretted hydro-gen, and is a productof animal and veget-able may frequently beobserved in stagnantpools, for when emit-ted it becomes lumi-nous by contact withatmospheric
Scientific amusements . slowly came to her moorings. This appear-ance is due to the presence of phosphorus in the tinyanimalculse of the sea. It is also observable in the femaleglow-worm, and the fire-fly. Phosphorus was discoveredby Brandt in 1669. Ii6 CHEMISTRY. It forms two compounds with oxygen—phosphorous acid, H,PO^, andphosphoric acid,H PO,. The com- 3 4 pound with hydrogenis well marked asphosphuretted hydro-gen, and is a productof animal and veget-able may frequently beobserved in stagnantpools, for when emit-ted it becomes lumi-nous by contact withatmospheric is a very prettybut not altogethersafe experiment to beperformed when phos-phuretted hydrogenhas been prepared inthe following small pieces ofphosphorus with milkof lime or a solutionof caustic potash ; ormake a paste of quick-lime and phosphorus,and put into the flaskwith some quick-limepowdered. Fix a tubeto the neck, and letthe other end beinserted in a basin of water. (^See illustration, page i i8.). WILL-O-THE-WISP. 117 Apply heat; the phosphuretted hydrogen will be given off,and will emerge from the water in the basin in luminous
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