But when every allowance is made for the imperfections or the cunning of the workman, one need only examine any collection of antiquities to see that there was a distinct appreciation of foreign physical types (not so much for personal portraiture), costumes, toilet, armour and decoration, often mar
Artificial membranes are seldom or never perfectly semi-permeable - some leakage of solute nearly always occurs, but the imperfections of actual membranes need no more prevent our use of the ideal conception than the faults of real engines invalidate the theory of ideal thermodynamics founded on the
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