The calculators of longevity believe that they may now, by taking down the dates from the first thirty tombstones in the cemeteries of the districts they pass through, learn the comparative healthiness and length of life of the inhabitants of the country. However this may be, there is no doubt that a large variety and extent of information may be thus obtained. The observer can ascertain where the fatal diseases of infancy most prevail,--which is the same thing as knowing that the physical and moral condition of the people is low; as a large proportion (not mere number) of deaths in infancy is a most unfavourable symptom of society. He can ascertain where consumption prevails, where fever, and where the largest proportion attains to length of days. It is much to know what character disease and death wear in any district. One character of Morals and Manners prevails where the greater number die young, and another where they die old; one where they are cut off by hardship; another where they waste away under a lingering disease; and yet another where they abide their full time, and then come to their graves like a shock of corn in its season. The grave-yards on the heights of the Alleghanies will tell a different tale of Morals and Manners from the New Orleans' cemetery, glaring in the midst of the swamp; and so would the burial-places in the suburbs of Irish cities, if their contents were known, from those of the hardy Waldenses, or of the decent and thriving colonists of Frederick's-oord. * * * * *