. Bulletin - United States National Museum. Science. ryifl 36. a n't tin in ton Dfon fingcmauerte* jupc .via redd Kill! man Moil i^oc- Ulvn ncm Figure 4.âApparatus for converting white phos- phorus into the red allotropic form. 1851. Redistilled phosphorus is heated in the glass or porcelain vessel (g) which is surrounded by a sandbath (e) and a metal bath (b). Vessel (j) is filled with mercury and water; together with valve (k), it serves as a safety device. The alcohol lamp (1) keeps the tube warm against clogging by solidified vapors. Because of hydrogen phosphides, the operation, carried o
. Bulletin - United States National Museum. Science. ryifl 36. a n't tin in ton Dfon fingcmauerte* jupc .via redd Kill! man Moil i^oc- Ulvn ncm Figure 4.âApparatus for converting white phos- phorus into the red allotropic form. 1851. Redistilled phosphorus is heated in the glass or porcelain vessel (g) which is surrounded by a sandbath (e) and a metal bath (b). Vessel (j) is filled with mercury and water; together with valve (k), it serves as a safety device. The alcohol lamp (1) keeps the tube warm against clogging by solidified vapors. Because of hydrogen phosphides, the operation, carried out at 2600 C, had to be watched very carefully. (According to Arthur Albright. 1851; reproduced from Hugo Fleck, Die Fabrikation chemischet Produkte . . , page 112.) production of phosphorus for matches, the workers experienced the poisonous effects. In the plant of Black and Bell at Stratford, this was prevented by inhaling turpentine. Experiments on dogs were car- ried out to show that poisoning by phosphorus could be remedied through oil of Chemical Constitution of Phosphoric Acids In a long article on phosphorus, Edmond Wilhu wrote in 1876: ''For a century, urine was the only source from which phosphorus was obtained. After Gahn, in 1769, recognized the presence of phosphoric acid in bones, Scheele indicated the procedure for making phosphorus from ; |,J Actually, Gahn used at first hartshorn (Cornu cervi usliim), and Scheele doubted, until he checked it himself, that his esteemed friend was right. A few years later, Scheele corrected Gahn's assumption that the sal microcosmicum was an ammonia salt; instead, it is "a tertiary neutral salt, consisting of alkali minerali fixo (, sodium), alkali volutin, and acido ; 20 In the years after 1770, phosphorus was discovered in bones and many other parts of various animals. Treatment with sulfuric acid decomposed these ma- terials into a solid residue and dissolved phosphoric acid. Ma
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