240 Onthe Effect of the Quantity of Matter in 
statement in substance, respecting the second as well as the 
first ;* and where we find these marks of scrupulous caution 
in two cases, it is but a piece of common justice, to suppose 
they were not wanting in the others, and that the mention of 
these was omitted, merely because it was supposed to be 
unnecessary. : 
The language of Davy, in the objections he has framed 
to the seventh, or last and least valuable of Berthollet’s ex- 
periments, shows that he did not recur to the writings of that 
chemist, to see what the experiments really were; and 
though it is barely possible, there might be something like 
the play of affinities supposed by him: the view of the 
a distinguished chemist, solely on his own misconceptions of the experiments 
by which that theory is supported, and the error be propagated frien on book 
to another for years, is lamentable. 
“Le sulfate de potasse ayant été soumis & la méme épreuve avec poids 
| de chaux,” etc. 
