ON LARD, AND COMPOUNDS MADE WITH IT. . IQJ 



The phosphu retted lard prepa-ed with a boillui^ or a Sjen- Faintly lumi- 

 tle hear, and wa .bed or unwashed, did not shine in tl)e durk j)°^'j|.^^ ^^ 

 at a teni erutuie ot 55° or Oj-', even when rubbed by the 

 haiid. At lt)7° it was fainti}^ luminous. 



Twelve grains of phosphorus bein^ distilled with two Lard distilled 

 oniroes of lard, the mixture assumed a coally aspect much "* poosphB 

 sooner than lard alone. At the commencement phosphu- 

 retted hid:ogen gas was evolved, which took fire in the re- 

 ceiver; and afterward both phosphuretted and carbnretted 

 hidrogen were oi)tained in a jar over mercury. The receiver 

 contained lard, whit h had carried over with it phosphorus 

 and [jhosphu retted hidro^en gas. After cooling, on the ad- 

 mission of air, it burned the lard rapidly. 



Whatever temperature be employed therefore, to dlssoive Phospborota* 

 phosphorus in laid, more or less pbos;)horous acid is always j^^^'' ^i^^ay* 

 formed ; whence I am induced to think, that the same thing 

 happens in many other phosphuretted compounds. 



AH these experiments were made in contact with air. Tf air v ere ex- 

 When air was exciudvd, the lard dissolved a portion of phos- eluded, it soon 

 phorus without its being aciditied ; but it became acid in a on expoiu/e to 

 few minutes, on pouring out the nieited lard, or shaking it it- 

 in the open air. 



A cylinder 10 inches long and 8 lines in diameter was fill- -VsMe^ phas- 

 ed with melted laid, and inunersed in merourj^ Half of it phorus from 

 being expelled in this situation by phosphuretted hidrogen hidro .;u. 

 gas, the cylinder was corked, removed into hot water to keep 

 the lard in fusion, and shaken tiil co.d. On examination it 

 was found to have diaaoived all ti;e piio-ipiiorus contained m 

 the gas. 



As the muriatic acid does not act on hud, and t!-.er& is no- Action of 

 thing interesting in the action of the sulphuric, l\ir. Vogtl acids. 

 contined himself to tije nitric. He treated lard with it as 

 directed by Fourcioy and Alyon ibr making the oxigenized 

 pomatum. Alyon observes, that this pomatum has no need 

 of being washed^ as it is not acid. Vogel iepeated his pro- ^'jtric always 

 cess with an ounce of acid at 3ii^ to a paund of iard ; ana 'eaves It acid, 

 afterward with acid at 30^ 28^, and as weak as 24*^ ; but he 

 alwavs found the oxigen'.Eed lard acid. 



Making the experiment in a retort communicating with a Nitrogen, ni- 

 pneuinato-cheanical apparatus, he obtained niti'Ogeu gas, n(»t t^ous, aud car* 



pure, 



