For one or two examples I appeal to chemistry. In the book of Proverbs, (chap. 25, v. 20,) we find it said, that _as vinegar upon nitre, so is he that singeth songs to a heavy heart_. We should expect from this statement that when we put vinegar upon what we call nitre, it would produce some commotion analogous to the excitement of song-singing. But we should try the experiment in vain; for no effect whatever would be produced. Again, it is said by the prophet Jeremiah, (chap. 2, v. 22,) _Though thou wash thee with nitre, and take thee much soap, yet thine iniquity is marked before me, saith the Lord._ Here, too, we should expect that the use of the nitre would increase the purifying power of the soap; but the experiment would prove rather the reverse. The chemist, however, informs us that there is a substance, viz., the _carbonate of soda_, which, if substituted for the nitre, would effervesce with vinegar, and aid the purifying power of soap, and thus strikingly illustrate the thought both of Solomon and Jeremiah. And on recurring to the original, we find that [Hebrew] (nether, _nitrum_, _natrum_) does not necessarily mean the salt which we call nitre, but rather a fossil alkali, the _natron_ of the ancients, and the carbonate of soda of the moderns. It is probably the prevailing opinion among intelligent Christians at this time, and has been the opinion of many commentators, that when Peter describes the future destruction of the world, he means that its solid substance, and indeed that of the whole material universe, will be utterly consumed or annihilated by fire. This opinion rests upon the common belief that such is the effect of combustion. But chemistry informs us, that no case of combustion, how fiercely soever the fire may rage, annihilates the least particle of matter; and that fire only changes the form of substances. Nay, there is no reason whatever to suppose that one particle of matter has been annihilated since the world began. The chemist moreover asserts that all the solid parts of the globe have already undergone combustion, and that although heat may melt them, it cannot burn them. Nor is there any thing upon or within the earth capable of combustion, but vegetables, and animals, and a few gases. Has Peter, then, made a mistake because he did not understand modern chemistry? We have only to examine his language carefully, as it seems to me, in order to be satisfied that he means only, that whatsoever upon, or within, the earth, is combustible, will be burned up at the final conflagration; and that the whole globe, the _elements_, _will melt with fervent heat_. He nowhere asserts, or implies, that one particle of matter will be annihilated by that catastrophe. Thus science, instead of proving his statements to be erroneous, only enables us more correctly to understand them.