An essay on the ultimate principles of chemistry, natural philosophy, and physiology : deduced from the distribution of matter into two classes or kinds, and from other sources / by Lardner Vanuxem.

  • Vanuxem, Lardner, 1792-1848.
Date:
1827
Catalogue details

Licence: Public Domain Mark

Credit: An essay on the ultimate principles of chemistry, natural philosophy, and physiology : deduced from the distribution of matter into two classes or kinds, and from other sources / by Lardner Vanuxem. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    is made manifest. This knowledge is all important in chemistry, as will subsequently be shown; for the doctrine oFheat is involved in chaotic obscurity in all those instances in which substances acting upon each other, produce a greater degree of heat, whe- ther sensible or latent, than can be proven to belong- to them. Besides the primary differences already men- tioned of the two classes of particles, they differ from each other in other important respects. The one class, the concreting particles, cannot, so far as our experience goes, be called, as it were, into ex- istence, or made quiescent; for if a disappearance takes place, it is merely that change of state, which is not obvious to sight: they can only change their form, their presence can always be exhibited; we are always certain of their identity, for we can make them manifest to us, either by weight, measure, or otherwise. The other class, the non-concreting particles, seem in certain states of the action of the concreting particles upon each other, to be called into existence—a creation, as it were, from nothing; for no one has been able to say from whence, or from what source derived. All of them, likewise, have the common property of passing from the sensible, and latent, to the quiescent, or cryptic state. A few examples of the mode of action of these two classes of particles, may be necessary, for those