[65d]
for testing-instruments1 of the tongue,—when they strike upon the moist and soft parts of the flesh and are melted down, contract the small veins and dry them up; and these particles when more rough appear to be” astringent,” when less rough “harsh.” And such as act on these veins as detergents and wash out all the surface of the tongue, when they do this excessively and lay such hold on the tongue as to dissolve part of its substance—and such, for example, is the property of alkalies,—
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1 The function of the nerves is here assigned to the veins.
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