...In those high regions the rarefied air is hard to breathe by those born in the valleys; every breath he drew hurt him, and the blood oozed out from the tips of his fingers... 
(AKA Ralph Iron) Olive Schreiner 「The Story of an African Farm」
...The enemy seeks to pass them, but they mount still, until at last the Hobby, heavier, and little accustomed to this rarefied air, grows tired and gives up the pursuit...
Frédéric Houssay 「The Industries of Animals」
...It is worth noting because it indicates a vague feeling that art has areal value, that art is not a mere luxury, nor even a rarefied form ofpleasure...
Jane Ellen Harrison 「Ancient Art and Ritual」
...He seeks for pleasure,for sensual pleasure as his name says, not for the grosser kinds, butfor pleasure of that rarefied kind that we call a sense of beauty...
Jane Ellen Harrison 「Ancient Art and Ritual」
...But we must tread lightly in these rarefied regions and get onto more practical concerns...
Harold Speed 「The Practice and Science Of Drawing」
...he bombarding electrons had passed through the outer shell of thebuilding's double-wall, and been absorbed in the rarefied, magnetizedair-current of the Erentz circulation...
Various 「Astounding Stories of Super-Science, June, 1930」
...This was serious damage! The rarefied Erentz-air wouldseep out...
Various 「Astounding Stories of Super-Science, June, 1930」
...ne by one, Nat last, the crew filed down the ladder onto thelanding-stage, gasping and choking in the rarefied air that lay like ablanket at the bottom of the crater...
Various 「Astounding Stories of Super-Science, August 1930」
...Norman kept the plane curving steadily upward, handling it withsurpassing skill in the rarefied air...
Various 「Astounding Stories of Super-Science, August 1930」
...It is a sort ofimmense atmosphere, extremely rarefied...
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
...It is impossible to determine exactly at what distance from the earth'ssurface the air ceases altogether, for it grows continually more andmore rarefied...
Cecil G. Dolmage 「Astronomy of To-day」
...The question of melting at all may seem strange in a planet which issituated so far from the sun, and possesses such a rarefied atmosphere...
Cecil G. Dolmage 「Astronomy of To-day」
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