 | John Wesley - 1786 - 738 էջ
...you bring the focus to ablackfpot, or upon letters, written or printed, the paper will immediately be on fire under the letters. Thus Fullers and Dyers find black cloths, of equal thicknefs with white ones, and hung out equally wet, dry in the fun much fooner than the white, being... | |
 | 1800 - 586 էջ
...bring the focus to a black" fpot, or upon letters, written or printedj the paper will immediately be on fire under the letters. Thus fullers and dyers find black cloths, of equal thicknefs with white ones, and hung out equally wet, dry in the fun much fooner than the white, being... | |
 | 1800 - 580 էջ
...bring the focus to a black fpot, or upon letters, written or printed, the paper will immediately be on fire under the letters. Thus fullers and dyers find black cloths, of equal thicknefs* with white ones, and hung out equally wet, dry in the fun much fooner than the white, being... | |
 | Arthur Johnston - 1810 - 180 էջ
..." I " Another. Try to fire the paper with a burning glass. If it is white, you will not easily burn it; — but if you bring the focus to a black spot,...or upon letters, written or printed, the paper will immediately be on fire under the letters. " Thus fullers and dyers find black cloths, of equal thickness... | |
 | Ezra Sampson - 1813 - 434 էջ
..."Try," says the doctor, " to fire paper with a burning glass : if it is white, you will not easily burn it ; but if you bring the focus to a black spot, or upon letters, written or printed, the paper will immediately be on fire under the letters." Public opinion is, in this instance, on the side of the... | |
 | Ezra Sampson - 1816 - 432 էջ
...Doctor, " to fire paper with a burning glass : if it is white, you will not easily burn it ; but it you bring the focus to a black spot, or upon letters, written or printed, the paper will immediately be on fire under the letters." Public opinion is, in this instance, on the side of the... | |
 | Benjamin Franklin - 1820 - 360 էջ
...still cool. Another : Try to fire paper with a burniugglass. If it is white, you will not easily burn it ; but if you bring the focus to a black spot, or upon letters, written or printed, the paper will immediately be on fire under the letters. Thus fullers and dyers find black cloths, of equal thickness... | |
 | 1821 - 356 էջ
...still cool. Another : Try to fire paper with a burningglass. If it is white, you will not easily burn it ; but if you bring the focus to a black spot, or upou letters, written or printed, the paper will immediately be on fire under the letters. Thus fullers... | |
 | Hewson Clarke, John Dougall - 1825 - 892 էջ
...paper with a burning-glass : if it be white, you will not easily burn it ; but if you bring the ibcus to a black spot, or upon letters written or printed,...being more readily heated by the sun's rays. It is the same before a fire : the heat sooner penetrates black stockings than white ones, and sooner scorches... | |
 | 1825 - 314 էջ
...still cool. Again. Try to fire paper with a burning glass. If it is whito, you will not easily burn it ; but if you bring the focus to a black spot, or upon letters written or printed, the paper will immediately be on fire under the letters. The fullers and dyers find black cloths, of equal thickness... | |
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Thus Fullers and Dyers find black Cloths, of equal Thickness with white ones, and hung out equally wet, dry in the Sun much sooner than the white, being more readily heated by the Sun's Rays. 
