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 ...