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ESSAY IX.
Of the Reason of Animals.
All our Reasonings concerning Matter of Fact are founded on a Species of Analogy, which leads us to expect from any Cause the same Events, which we have observ'd to result from similar Causes. Where the Causes are entirely similar, the Analogy is perfect, and the Inference, drawn from it, is regarded as certain and conclusive; nor does any Man ever entertain a Doubt, where he sees a Piece of Iron, that it will have Weight and Cohesion of Parts; as in all other Instances, which have ever fallen under his Observation. But where the Objects have not so ex-act
