152 



MEMOIR OF DR. DALTON, AND 



should have a series of experiments, which, if rightly com- 

 pared, would not only disclose the various properties of each, 

 worthy of observing, but would determine also the relative 

 quantities. In this way, if the absolute value of only one 

 were diligently sought out, all the rest would follow. 



Vol. ii., p. 373. " The calces of metals have not that amount 

 of phlogiston which is necessary to the metallic condition, but 

 they are still found not entirely deprived of it. 



" Metallic precipitates, when properly examined, reveal to 

 us various mysteries."* 



" In the following table 100 parts of reguline metal are in 

 all cases understood to be dissolved : — f 



100 parts of Gold with the aerated mineral alkali gave 106 of dry precipitate. 



,, ,, caustic 110 



„ ,, martial vitriol 100 



,, Platina ,, aerated mineral alkali 34 



,, ,, caustic 36 



,, Silver ,, aerated mineral alkali 129 



,, ,, caustic 112 



,, ,, phlogist. (pruss. of pot.) •• 145 



M „ saline 133 



„ ,, vitriolated 134 



,, Mercury „ aerated mineral alkali 110 



,, ,, caustic 104 



,, ,, vitriolated 119 



„ Lead ,, aerated mineral alkali 132 



,, ,, caustic , 116 



,, „ vitriolated 143 



>« Copper ,, aerated mineral alkali 194 



,, ,, caustic 158 



„ ,, phlogisticated 530 



,, Iron ,, aerated mineral alkali 225 



„ ,, caustic 170 



„ „ phlogisticated 690 



„ Tin ,, aerated mineral alkali 131 



„ ,, caustic 130 



„ M phlogisticated 250 



• Page 390. f Vol. II., p. 390. 



