The question as to the liabilities arising upon the destruction of property by a fire which has originated through negligence, is one of considerable importance, both to the public and to Insurance Offices; and as it appears that the vulgar notions afloat upon it, by no means tally with the law, and have, nevertheless, their origin in no less an authority than that of Sir William Blackstone, it may be a matter of interest to the readers of this magazine to investigate the subject.