Vulgar words in Scientific American Supplement, No. 288, July 9, 1881 (Page 1)
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~ ~ ~ Sentence 170 ~ ~ ~
It will be noted that the non-volatile residue of anthracite is never as low as 86 per cent., and this, together with the very dry steam coals and bastard anthracite (found over a not inextensive tract of the South Wales Coal field), form a series of coals, alike difficult to burn in Thompson's calorimeter.
~ ~ ~ Sentence 171 ~ ~ ~
Considerable experience has shown that in no single instance was the true comparative heating power of anthracite or bastard anthracite indicated.
~ ~ ~ Sentence 627 ~ ~ ~
Ass.