. The Pharmaceutical era. Fig. 24.—Petroleum Lamp Fixed Animal and Vegetable certain ofthe fixed animal and vegetable oils, as Lard and SpermOil, etc., were frequently made use of as a source of heatin small operations, but have been almost entirely dis-placed by the cheaper and better petroleum products, and

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Keywords: ., bookcentury1800, booksubjectdrugs, booksubjectpharmacy, bookyear1