In man, the mechanical breathing is essential to life, and it is one of the old tests for death to see whether these movements have ceased completely.

- August Krogh

The absorption of oxygen and the elimination of carbon dioxide in the lungs take place by diffusion alone. There is no trustworthy evidence of any re…

- August Krogh

Muscles do not use oxygen at a constant rate.

- August Krogh

We may fondly imagine that we are impartial seekers after truth, but with a few exceptions, to which I know that I do not belong, we are influenced-a…

- August Krogh

The theory of the lung as a gland has justified its existence and done excellent service in bringing forward facts, which shall survive any theoretic…

- August Krogh