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IPIT LAMPS AND THE WAR.

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Rhannu

PIT LAMPS AND THE WAR. GLASSES MADE IN GERMANY. Many people do not know that the glasses for pit lamps are by no means an easy production. They require glass of a special nature which has to pass severe tests under the Home Office. The Schott works at Jena, in Germany, supplied us with most of these glasses before the war, and as about two and a half million are req uired every year, our glass manufacturers were faced with a difficult task when the war broke out. Not only were we deficient in the pro- duction of pit lamp glasses, but in all kinds of chemical and laboratory ware and optical glass The Institute of Chemistry appointed a Glass Research Committee, which has done most useful work for the Govern- ment, and given the British manufac- turers the formulae for the varieties most urgently needed. The pit lamp glasses and much of the new work undertaken has been a complete success, and is quite equal to that im- ported hitherto from foreign countries. There is still much to be done in the production of high-class optical glass as is used far lenses and microscopes.

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