Pe ee ee ee ee ee ee) pour dis a ae 
Tagg uy 
VOC 
” Of Liebie’s “ Principles, » 80 called, se ge 
90. Under the head of the “ ‘theory of organic ahida,”?4 in Tachig’s 
Treatise on Organic Chemistry, we find the following allegations 
dignified by the name of principles. . Manifestly they must tend 
to convey a false impression to the student, that hydrogen has 
a peculiar property of creating a capacity for saturation, instead 
of being only the measure of that capacity, as is actually true, 
and likewise that in this respect it differs from any other radical. 
91, The allegations to which I refer are as follows, being a 
literal saan from the French copy of the Traité of Liebig, 
sé —. hydrated aida are Scpabiaislinns of one or more elements with 
hydrogen, in which the latter DAY, be replaced wholly or in part by 
equivalents of. metals.” 4 
“The capacity of saturation fescue consequently on the quantity of 
hydrogen which can be replaced. _ 
“The compound formed by the other elements being considered as 
‘a radical, it is evident that the composition of this radical can exercise 
no influence on the capacity of saturation. 
“The capacity of saturation of these wxtde augments or diminishes in 
the same ratio as the quantity of hydrogen, not panies $ ae ae salt 
radical, augments or diminishes. + 
-) “If into the composition of the salt radical shicirs should be! sithodgea 
an n undetermined quantity of any elements, without changing ed 
; hydrogen : : ee 
92. As by the advocates of ene pee ie ae « salt radicals, ” 
g the part of a metallic radical, 
capacity of nae in nn same predicament as any: other 
electro-positive radical, I cannot conceive wherefore laws, which 
affect every other body of this kind, should be stated as if partic- 
ularly associated with hydrogen. 
BE tah SOUR SEAS 1a 
* There is, in some respects, a coincidence ‘so remarkable as the part taken 
by Dr 1, that I quote at the inigiaig 
which oa been held t by us us respectively on this 8 “‘eabjeet.- 
of hydrogen, Dr. Kane uses the following words : — “Tt was at pe 
time rein that it shared with eree the power of generating acids; 
sulphur, chlorine, iodine, cyanogen, &c., formed one class by combining with nies 
gen, so they formed a second class, ‘called hydracids, by entering into union with 
