...And of courseall this movement used up more than the normal amount of oxygen, sothat he was forced to open the valves on his tanks to two or threetimes their normal flow... 
Various 「Astounding Stories, August, 1931」
...Can it be that they have the power of combining the oxygen and hydrogen of their vegetable food by vital force so as to form water?* ...
David Livingstone 「Missionary Travels and Researches in South Africa」
...Po, were soon consumed by the pure oxygen of the highland air...
Richard F. Burton 「Two Trips to Gorilla Land and the Cataracts of the Congo Volume 2」
...Res pi ra' tion, the passage of oxygen into the tissues of a living organism andof carbon dioxide out of them...
Worrallo Whitney 「A Guide for the Study of Animals」
...Rapid, irregular, or difficult breathing is known as dyspnea, and in allsuch cases the animal has difficulty in obtaining as much oxygen as itrequires...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Along the sides of the insect are a series of pairedopenings or spiracles, leading to a set of air-tubes which ramifythroughout the body and carry oxygen directly to the tissues...
Geo. H. Carpenter 「The Life-Story of Insects」
... What I am after is oxygen, the gas which I once saw fail so lamentably...
J. Henri Fabre Alexander Teixeira de Mattos 「The Life of the Fly」
...If an accident happen, I shall be the only one to suffer; and, in my opinion, it is worth a burn or two to make acquaintance with oxygen...
J. Henri Fabre Alexander Teixeira de Mattos 「The Life of the Fly」
...Even a chemical compound such as waterwe can resolve into oxygen and hydrogen and then reproduce out of itselements...
Robert Marett 「Anthropology」
...It is a most powerful oxidizingagent, and is decomposed with more or less rapidity, by almost all themetals, to which it yields a portion of its oxygen...
Samuel D. Humphrey 「American Handbook of the Daguerrotype」
...To convert this into sulphuric acid and gain more oxygen,nitric acid, which is rich in that body, is added...
Samuel D. Humphrey 「American Handbook of the Daguerrotype」
...A current releases it; the energy components reunite to give matter again—hydrogen and oxygen gas...
Various 「Astounding Stories of Super-Science January 1931」
..."There's more oxygen in it than in our own," surmised Wichter...
Various 「Astounding Stories, April, 1931」
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