So it ever is with mankind. People make mistakes, or are guilty of carelessness, and straightway they lay the blame -- not only without but against reason -- on broader shoulders than their own. That wonderful and almost perfect British Post-Office delivers quickly, safely, and in good condition above fourteen hundred millions of letters etc. in the year, but some half-dozen letters, addressed to Messrs. Blurt and Co., have gone a-missing, -- therefore the Post-Office is to blame!