He found:-- 1000 persons who lived from 100 to 110 15 persons who lived from 130 to 140 60 " " " " 110 to 120 6 " " " " 140 to 150 29 " " " " 120 to 130 1 person " " " to 169 Effect of Class-Influences, Occupation, etc .-- Unfortunately for the sake of authenticity, all the instances of extreme age in this country have been from persons in the lower walks of life or from obscure parts of the country, where little else than hearsay could be procured to verify them.

It must also be said that it is only among people of this class that we can expect to find parallels of the instances of extreme longevity of former times.

The inhabitants of the higher stations of life, the population of thickly settled communities, are living in an age and under conditions almost incompatible with longevity.

In fact, the strain of nervous energy made necessary by the changed conditions of business and mode of living really predisposes to premature decay.
Those who object to the reliability of reports of postcentenarianism seem to lose sight of these facts, and because absolute proof and parallel cannot be obtained they deny the possibility without giving the subject full thought and reason.

As tending to substantiate the multitude of instances are the opinions of such authorities as Hufeland, Buffon, Haller, and Flourens.