The lungs also excrete a large proportion of waste matter from the system.

Certain Coccideae also excrete honey-dew, especially in the tropics.

This water had been obtained from a well into which the excrete from a typhus patient had percolated from a privy.

Worms, amphibia, fishes, and snails form another group which excrete much less carbonic acid.

Careful watching showed that the plant-lice after this interval did not excrete the sweet fluid.

These tubes are shown to excrete nitrogenous waste products similar to uric acid.

It is now well proven that the injury is done, not by the bacilli themselves but by the toxines which they secrete or excrete.

The kidneys are the organs which serve to excrete poisons that find their way into the circulation.

The cell can secrete and excrete substance, and, in brief, presents nearly all the phenomena of a human being.

After this interval, I felt sure that the aphides would want to excrete.