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Updated: May 24, 2025
During a year or two of adolescence I used to be dabbling in chemistry a good deal, and as about that time I had my little aspirations and passions like another, some of these things got mixed up with each other: orange-colored fumes of nitrous acid, and visions as bright and transient; reddening litmus-paper, and blushing cheeks; eheu! "Soles occidere et redire possunt,"
I know it well; I have studied it in all its forms and in the effects which it produces. I recognized the presence of this poison in the case of poor Barrois as well as in that of Madame de Saint-Meran. There is a way of detecting its presence. It restores the blue color of litmus-paper reddened by an acid, and it turns syrup of violets green.
Perfect religious freedom in America there undoubtedly is; but it is the possession of only here and there an individual. Prevalent uncharitableness and bigotry are incompatible with the existence of religious liberty anywhere. Litmus-paper does not more faithfully detect the presence of an acid than the poetic instinct detects the false and foul in all that makes up human life.
We begin skirmishing with a few light ideas, testing for thoughts, as our electro-chemical friend, De Sauty, if there were such a person, would test for his current; trying a little litmus-paper for acids, and then a slip of turmeric-paper for alkalies, as chemists do with unknown compounds; flinging the lead, and looking at the shells and sands it brings up to find out whether we are like to keep in shallow water, or shall have to drop the deep-sea line; in short, seeing what we have to deal with.
How a knowledge of what acid will turn blue litmus-paper red is going to help an officer to find fodder for his troop horses, or inspire him to lead a forlorn hope, was then, and still is, beyond my youthful comprehension. But these studies were down on the roster, and whether I thought well of them or not I was marked on them and judged accordingly.
She carried the brimming cup of her inestimable virtues with a cautious, steady hand, and an eye always on them, to see that they did not spill. Then she was an admirable judge of character. Her mind was a perfect laboratory of tests and reagents; every syllable you put into breath went into her intellectual eudiometer, and all your thoughts were recorded on litmus-paper.
We begin skirmishing with a few light ideas, testing for thoughts, as our electro-chemical friend, De Sauty, if there were such a person, would test for his current; trying a little litmus-paper for acids, and then a slip of turmeric-paper for alkalies, as chemists do with unknown compounds; flinging the lead, and looking at the shells and sands it brings up to find out whether we are like to keep in shallow water, or shall have to drop the deep-sea line; in short, seeing what we have to deal with.
She carried the brimming cup of her inestimable virtues with a cautious, steady hand, and an eye always on them, to see that they did not spill. Then she was an admirable judge of character. Her mind was a perfect laboratory of tests and reagents; every syllable you put into breath went into her intellectual eudiometer, and all your thoughts were recorded on litmus-paper.
Alcohol, if applied as described for water, will act more promptly and show the scratched places. It may be well to use water first and then alcohol. To discover whether or not acids were used to erase, if moistened litmus-paper be applied to the writing, the litmus-paper will become slightly red if there is any acid remaining on the suspected document.
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