An esteemed correspondent writing from Boston, says: " I have just run through the pages of the November number and find many ' interesting' articles that should thus be permanently recorded; and this shows the importance of such an established journal in which may be preserved the progress in our times. Books are the chronicles of ages, the apostles of wisdom to succeeding generations. Your reply to your correspondent on Heart Hybridization pleased me much. O, yes; give him all the renown and glory which might arise from his inventive genius, should his theory prove true; but until this is proved and attested to by you, I fear I may continue to be an unconverted and doubtful practitioner".