260 On Chemical Nomenclature. 
e 
tions were amplified and corrected in obedience to more mature re- 
flection. A printed copy of that letter having been sent by me to 
Berzelius, I received in answer an epistle, of which I furnish you 
with a translation, | 
Since the period of that correspondence, so demonstrative of can- 
dor and good feeling on the part of the great Swedish chemist, I 
have published two editions of my Compendium of Chemistry, in 
which I have pursued a course corresponding with my criticisms 
above alluded to. I am therefore desirous, in addition to the letter 
of Berzelius to lay before the public a recapitulation, a review, and 
an additional explanation of the grounds upon which I have ventured 
to employ a language, and an arrangement inconsistent with the prac- 
tice and opinions of a chemist by whose authority in other respects 
Iam usually influenced. But before proceeding with the ungra- 
cious task of endeavoring to establish the correctness of my views 
in opposition to those of my friend, I feel that it will be no more 
than justice to repeat an acknowledgment, already made in my text 
book, that if De Bonsdorff, myself, and others are right in consider- 
ing the double salts of Berzelius as simple salts, it is to the light 
afforded by his investigations, that we owe the power of seeing the 
subject correctly. 1 believe the idea, that any other body besides 
oxygen could produce both acids and bases capable of forming salts, 
originated with Berzelius, in the instance of sulphur. . 
Recapitulation and review of the grounds of his deviating from the 
language and arrangement of Berzelius, and other distinguished 
chemists ; with some additional explanations and suggestions, by 
R. Hares, M. D., Professor of Chemistry in the University of 
Pennsylvania. 
According to the Berzelian nomenclature, bodies which produce 
salts by a union with radicals are called halogen or salt producing 
bodies, while those which with radicals form both acids and bases, 
capable by their union of constituting salts, are called amphigen bodies 
or both producers. Salts, produced by the first mentioned class are 
called haloid salts; those produced by the other are called amphide 
salts. 
. to this classification, a the words salt, acid and base, 
Beak, saa 5 red by sista been employed to de- 
substances differing in composition, and extremely discordant 
