Charles Darwin Quote

As it is certain that worms swallow many little stones, independently of those swallowed while excavating their burrows, it is probable that they serve, like mill-stones, to triturate their food.


Chapter 1: Habits of Worms, (p. 18) - The Formation of Vegetable Mould through the Action of Worms (1881)


As it is certain that worms swallow many little stones, independently of those swallowed while excavating their burrows, it is probable that they...

As it is certain that worms swallow many little stones, independently of those swallowed while excavating their burrows, it is probable that they...

As it is certain that worms swallow many little stones, independently of those swallowed while excavating their burrows, it is probable that they...

As it is certain that worms swallow many little stones, independently of those swallowed while excavating their burrows, it is probable that they...