Note 74 — Chapter VII
Reading edition
There is an unavoidable error here, since the excrement contains not only undigested food, but also contains some nitrogenous matter derived from the secretions of the intestine, etc.
Reading edition
There is an unavoidable error here, since the excrement contains not only undigested food, but also contains some nitrogenous matter derived from the secretions of the intestine, etc.