The fact that this is the sixth edition is ample proof of the popularity of Stewart's "Physiology." And the fact that these six editions have appeared at intervals during fifteen years is proof of the book's worth; it has worn well. This edition is a little larger than the others, owing to the addition of new matter; but the volume is not too bulky to be held for comfortable reading.
Mention of the good qualities has been often made, and need not be here repeated; but one cannot refrain from commending the clear style that makes abstruse subjects, which easily become monotonously dull, plain and interesting. Sometimes an illustrative comparison strikes one as a little odd, such, for instance, as this concerning the heart: "Like a musical box devised to play a series of melodies in a fixed order, and from which a particular tune cannot be obtained till those