Page:Philosophical Transactions - Volume 004.djvu/25

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perfecting the experiment of Sap, and to find out, whether it ascends more or less in the prict't Circles of the Body, then in those betwixt the Body and Bark; let the tree, exempted from all its sap the day before, be first peirced with an Auger, only through the Bark, and the quantity of Sap it yeilds, exactly measured and weighed: Then at the same time let also another hole be bored into the Rh