[ 237 ] 



According to Wenzel, then, loo grains mere foda take up 

 166,7 of ^^^^ aqueous acid, and Ihould afford 266 of nitrated 

 foda thoroughly deficcated ; and 100 grains of the aqueous acid 

 fhould take up 59,9 of foda. 



From- the experiment on nitrated foda Wenzel deduces the 

 ftrength of his fp. of nitre, which being the fame as he employed 

 in his fubfequent numerous experiments it is important to dif- 

 cover. 



As he faturated 71,5 grains foda with 347 grains of this fp. of 

 nitre and found the foda to take up 119,25 of what he thought 

 the ftrongeft nitrous acid, he concluded that 240 grains of it con- 

 tained 82,5 of the ftrongeft acid, and confequently 100 grains of 

 it fhould contain 34,375 of his ftrongeft acid. Now to compare 

 the quantity of his real acid in his fp. of nitre with that which I 

 judge his to poflefs, I muft. obferve that to faturate 71,5 grains 

 mere foda, 96,933 grains of my real acid would be requifite, and 

 confequently that 347 grains of his fpirit of nitre contained no 

 more ; therefore 240 grains of his fpirit of nitre contained but 

 67,04 of my real acid, and 100 grains of it contained 28 of my 

 real acid ; the difference is water contained in his ftrongeft acid. 

 Then 1000 grains of his ftrongeft acid is only equal to 812,6 of my 

 real acid ; the remainder v. z. 1 87,4 being water containedJn his 

 ftrongeft acid. 



MORVEAU 



