...Vinegar may be spilt on a piece of red-hotiron, or powder of sulphur may be burned into sulphuric gas and diffuseits vapours through the stall or shed... 
Honoré Bourguignon 「On the cattle plague: or, Contagious typhus in horned cattle. Its history, origin, description, and treatment」
...We sleep, too, among the trees, clearoff the ground, where there are dangerous vapours, so that we are freefrom all miasmata...
Various 「Heads and Tales」
...Then,dig in places where vapours are seen curling and rising up into the air...
Vitruvius 「Ten Books on Architecture」
...According to its composition, it is liable to turn eitherblack or a dull yellow in contact with sulphurous vapours...
George Field 「Field's Chromatography」
...I may call it Lumen crepusculum, theAurora ofthe Moone, or such a kinde of blushing light, that the Sunne causes whenhe is neere his rising, when he bestowes some small light upon thethicker vapours...
John Wilkins 「The Discovery of a World in the Moone」
... that part of our aire which is neerest to theearth, is of a thicker substance than the other, by reason tis alwaiesmixed withsome vapours, which are continually exhaled into it...
John Wilkins 「The Discovery of a World in the Moone」
...It was every moment changing into some of thecolours of the rainbow, as yellow, orange, purple, and red; though itwas generally white when it was at some distance from the vapours of thehorizon...
Richard A. Proctor 「Myths and Marvels of Astronomy」
...Other vapours may be produced by intense heat, possessing a much greater elasticity, from substances that evaporate, such as mercury, diamonds, &c...
Paul Henri Thiery (Baron D'Holbach) Samuel Wilkinson 「The System of Nature, Volume 2」
...The vapours of iron, sodium, magnesium, and other metals, areindicated as existing in small quantities...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...We know that these lines are dueto the absorptive action of vapours existing in the atmosphere of thesun, and from the position of the lines we can tell what the vapoursare...
Richard A. Proctor 「Myths and Marvels of Astronomy」
...These facts indicate thepresence of great masses of the vapours of sodium and calcium over thenucleus...
Robert Stawell Ball 「The Story of the Heavens」
...The light is sufficient, indeed,to render these earth-born vapours more visible: it is not sufficient todispel them...
Oliver Lodge 「Pioneers of Science」
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herbage fashionably acceptably
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