_ )
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sider their theories of the earth or hea- vens, the discoveries they have made by glasses, or any other of their contem- plations on nature. We ara not a little pleased to find every green leaf swarm with thousands of animals, which at their largest grovvth are not visible to the naked eye.
There is something very engaging to the fancy, as well as to our rea* son, in the treaties of metals , plants and meteors. But when we survey the vvhole earth at once , and the several planets that lie within its neigbourhood, we are filled with a pleasing astonish- ment, to see so many worlds hanging one above another, and sliding round their axles in such an amazing pomp and solemnity. If, after this, we con- template those wide fields of aether, which reach in hight as far as front Saturn, to the fixed stars, and abroad almost to an infmitude , our Imagination finds its capacity filled with so immense a prospect as puts it upon the Stretch to comprehend it. But if we yet rise higher, and consider the fixed