SIR,--Your favor of March 27th came during my absence on a journey of some length. It covered your "Rudiments of English Grammar," for which I pray you to accept my thanks. This acknowledgment of it has been delayed, until I could have time to give the work such a perusal as the avocations to which I am subject would permit. In the rare and short intervals which these have allotted me, I have gone over with pleasure a considerable part, although not yet the whole of it. But I am entirely unqualified to give that critical opinion of it which you do me the favor to ask. Mine has been a life of business, of that kind which appeals to a man's conscience, as well as his industry, not to let it suffer, and the few moments allowed me from labor have been devoted to more attractive studies, that of grammar having never been a favorite with me. The scanty foundation, laid in at school, has carried me though a life of much hasty writing, more indebted for style to reading and memory, than to rules of grammar. I have been pleased to see that in all cases you appeal to usage, as the arbiter of language; and justly consider that as giving law to grammar, and not grammar to usage. I concur entirely with you in opposition to Purists, who would destroy all strength and beauty of style, by subjecting it to a rigorous compliance with their rules. Fill up all the ellipses and syllepses of Tacitus, Sallust, Livy, &c., and the elegance and force of their sententious brevity are extinguished. "Auferre, trucidare, rapere, falsis nominibus, imperium appellant." "Deorum injurias, diis curæ." "Allieni appetens, sui profusus; ardens in cupiditatibus; satis loquentiæ, sapientiæ parum." "Annibal peto pacem." "Per diem Sol non _uret_ te, neque Luna per noctem." Wire-draw these expressions by filling up the whole syntax and sense, and they become dull paraphrases on rich sentiments. We may say then truly with Quinctilian, "Aliud est Grammaticé, aliud Latiné loqui." I am no friend, therefore, to what is called _Purism_, but a zealous one to the _Neology_ which has introduced these two words without the authority of any dictionary. I consider the one as destroying the nerve and beauty of language, while the other improves both, and adds to its copiousness. I have been not a little disappointed, and made suspicious of my own judgment, on seeing the Edinburgh Reviews, the ablest critics of the age, set their faces against the introduction of new words into the English language; they are particularly apprehensive that the writers of the United States will adulterate it. Certainly so great growing a population, spread over such an extent of country, with such a variety of climates, of productions, of arts, must enlarge their language, to make it answer its purpose of expressing all ideas, the new as well as the old. The new circumstances under which we are placed, call for new words, new phrases, and for the transfer of old words to new objects.