HUMAN RESPIRATION - Doctoral Thesis - Simão da Cunha Pereira - 1847

 

FEW AND QUICK CONSIDERATIONS

ON THE

BREATHING WORK IN THE MAN,

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Definition and need of the breathing.

In Physiology one understands for breathing work, breathing, hematosis or sanguification, the conflict of the nutritious fluid with the atmospheric air.

In the whole duration of the independent life of the organized beings it is this conflict indispensable for them.

From the alga to the cedar, from the hydra to the man, for all of them the vacuum is the death. Nor today one still contests the truthfulness of this proposition, all the wise persons are in agreement in recognizing the indispensability of that conflict; but the essence, its nature still continues to be object of doubts and contestations.

Observing however conscientiously the facts, and with fidelity translating them, the unaware spirit is forced to suit that such a conflict is an all chemical phenomenon, strange to the direct influence of the life, and that consists essentially of an exchange of gases.

To prove similar truth is the target of this thesis.

Alterations of the atmospheric air.

Established for the life the no more disputable indispensability of the air, being this heterogeneous one, that is, resultant of the mixture in given proportions of nitrogen, oxygen and carbonic acid, containing of more in solution water and other volatile bodies of the surface of the earth, there accomplishes to know if all its constituent prnciples have equal value in the hematosis, or before, if the only one, and then to the one which, it owes the property of entertaining the life.

The observation and the experience answer categorical and peremptorily to this duplicated question.

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