When a worm is suddenly illuminated and dashes like a rabbit into its burrow-to use the expression employed by a friend-we are at first led to look at the action as a reflex one. (Charles Darwin)

When a worm is suddenly illuminated and dashes like a rabbit into its burrow-to use the expression employed by a friend-we are at first led to look at the action as a reflex one.

Charles Darwin

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action expression led rabbit reflex use worm

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