I hardly dare go on to speak of exercise, lest I should share the reproach of that ancient rhetorician who,—as related by Plutarch, in his Aphorisms,—after delivering an oration in praise of Hercules, was startled by the satirical inquiry from his audience, whether any one had ever dispraised Hercules. As with Hercules, so with the physical activity he represents,—no one dispraises, if few practise it. Even the disagreement of doctors has brought out but little skepticism on this point. Cardan, it is true, in his treatise, “Plantae cur Animalibus diuturniores,” maintained that trees lived longer than men because they never stirred from their places. Exercise, he held, increases transpiration; transpiration shortens life; to live long, then, we need only remain perfectly still. Lord Bacon fell in with this fancy, and advised “oily unctions,” to prevent perspiration. Maupertuis went farther, and proposed to keep the body covered with pitch for this purpose: conceive, Dolorosus, of spending threescore years and ten in a garment of tar, without even the ornament of feathers, sitting tranquilly in our chairs, waiting for longevity! In more recent times, I can remember only Dr. Darwin as an advocate of sedentary living. He attempted to show its advantages by the healthy longevity attained by quiet old ladies in country-towns. But this is questioned by his critic, Dr. Beddoes, who admits the longevity, but denies the healthiness; he maintains that the old ladies are taking some new medicine every day,—at least, if they have a physician who understands his business.