Science.

Manawatu Standard, Volume IV, Issue 252, 20 September 1884, Page 5 (Supplement)

Science.

A FsENqn electrician haa invented a newj soundißg-lead, which' tells the exact moment' of its reaching the bottom by means of an electric bell. . Dr. Mac Lagan, the discoverer of the sali- ; ojl» trests£nt of rheumatism, declares that ' the application of cold to the surface m f everß drives the blood to the internal organs, and increases liability to perforation and hemorrhage. , . ; '<■ 1n[1833, or little more than half a century, ago, John Walker, of Stockton-on-Tees made the first lucifer match m England. There was a ma.tch factory established m Vienna m the same year. For fourteen years the per- j sons engaged m making the old luoifers suf- 1 fered from phosphorous necrosis. Amorphous phosphorus was substituted for the common kind, and a terrible disease banished- from what was soon found to be a useful and ultimately an indispensable industry. . j Sib Joseph Father, President of the London Medical Society, has come forward' with an infallible receipt for' soothing fretful children to sleep. He suggests that m nearly every Himalayan village the native baby is placed m a trough into which there trickles a constant stream of water. This falling upon the vertex of the cranium induces .sleep. Children lie m their troughs for hours asleep, while their mothers go about [their • work. ■ : , i: . ... ;,.-: .. ;; j .-- In a long communication to the French Academy of Science, Paul Bert, a high authority, testifies to the excellence of eight grammes of chloroform vaporised m 100 litres of air as an anesthetic. His exporimeats were made on human beings of both sexes, ! from seventeen months upwards. The mixture is not disagreeable. Some rather like it. Insensibility lasted six or eight minutes' and' m one case was maintained one and a quarter hours. There was no nausea.' '• ' j An ingenious and cheap method of producing a stony surface upon a metal plate, \o be used m a lithographic press instead of a atone has been patented m England. Slaked jlime is added to a water bath, which afterward is treated with carbonic acid. By this means a saturated solution of carbonate of lime is produced, which can be drawn off as a dear liquid. A carefully-cleaned metal plate is moistened with .this liquid by a spray: apparatus, and then dried by heat. These operations are repeated alternately until a firmly adhering deposit of limestone is! obtained upon the plate, when it is ready for receiving the lithographic ink. \