Elements of the economy of nature; or, The principles of physics, chemistry and physiology

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الصفحة 14 - Are not gross bodies and light convertible into one another, and may not bodies receive much of their activity from th'e particles of light which enter their composition...
الصفحة 14 - WE ARE TO ADMIT NO MORE CAUSES OF NATURAL THINGS THAN SUCH AS ARE BOTH TRUE AND SUFFICIENT TO EXPLAIN THEIR APPEARANCES. To this purpose the philosophers say that Nature does nothing in vain, and more is in vain when less will serve; for Nature is pleased with simplicity, and affects not the pomp of superfluous causes.
الصفحة ii - For I am wont to judge of opinions as of coins: I consider much less, in any one that I am to receive, whose inscription it bears, than what metal it is made of. It is indifferent enough to me whether it was stamped many years or ages since, or came but yesterday from the mint. Nor do I regard through how many, or how few, hands it has passed for current, provided I know by the touchstone or any sure trial purposely made, whether or no it be genuine, and does or does not deserve to have been current....
الصفحة 11 - HAIL, holy Light, offspring of heaven first-born, Or of the eternal co-eternal beam, May I express thee unblamed ? since God is light, And never but in unapproached light Dwelt from eternity, dwelt then in thee, Bright effluence of bright essence increate.
الصفحة ii - ... touchstone or any sure trial purposely made, whether or no it be genuine, and does or does not deserve to have been current. For if upon due proof it appears to be good, its having been long and by many received for such will not tempt me to refuse it. But if I find it counterfeit, neither the prince's image or inscription, nor its date (how ancient soever), nor the multitude of hands through which it has passed unsuspected will engage me to receive it. And one disfavouring trial, well made,...
الصفحة 8 - Boscovich, that the ultimate atoms of bodies are homogeneous, we are incapable at present of deciding whether it be well or ill founded. It is not likely that any of these ultimate elements has ever come under our inspection. All our simple bodies are most probably compounds. It is possible that the ultimate elements of bodies may be very few — it is even conceivable that they may be reduced to two; but in what way all the variety of bodies with which we are acquainted, could be produced from one...
الصفحة 78 - ... northern boundary of the coal-field, and consequently a large expenditure of money in the search for coal in that direction could not be recommended. To the southward, however, along Boone River and some of its tributary creeks, the case is quite different, for here large quantities of coal exist, as may be seen by any one who will take the trouble to go to the localities, where it is to be seen in natural exposures in the hill sides.
الصفحة ii - I say then in short that, in an opinion, I look upon its being new or ancient, and its being singular or commonly received, as things that are but extrinsical to its being true or false. And, as I would never reject a truth for being generally known * Here I .at adds: 'or not a few Deists

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