The value of his books may be inferred from the fact that they have passed through a succession of editions. The ninth edition of " Analytical Mechanics" was published in 1874. AVe judge from a mere pa.ssing sentence in the preface to the second edition that, in the so-called conflict between scientists and the Bible, this eminent scholar and scientist has no sympathy with Anti-Theism. Speaking of a mathematical formula which he framed and which expresses the laws that govern the action and reaction of forces upon bodies, he says of this formula, --

" It embraces alike, in their reciprocal action, the "gigantic and distant orbs of the celestial regions " and the proximate atoms of the ethereal atmosphere " which pervades all space, and establishes an un- " broken continuity upon which its divine architect " and author may impress the power of His will at a " single point and be felt everywhere."

This, even in an academy text-book, is a strong tribute to Theism, and when it is added as a fact that Professor Bartlett is a worthy member of the Ei)i.scopal communion, [it may be safely taken as a tribute to Theism in its Christian phase.

In 1871, at sixty-seven years of age, Professor Bartlett was retired at his own request. On the 1st of July he removed from West Point to Yonkers, and took possession of a fine residence which he had purchased for himself on Locust Hill Avenue. Here he has since lived. At the time of his retirement from the Point he was elected actuary of the Mutual Life Insurance Company of New York, and this position he still holds, faithfully fulfilling its duties day by day, even at eighty-one years of age. He has rendered exceedingly valuable service to the comi>any.