The deaths of my pupils and sister have often been urged as objections to my mode of treating the fever. Had the same degrees of labour and fatigue, which preceded the attack of the yellow fever in each of them, preceded an attack of a common pleurisy, I think it probable that some, or perhaps all of them, would have died with it. But when the influence of the concentrated miasmata which filled my house was added to that of constant fatigue upon their bodies, what remedies could be expected to save their lives? Under the above circumstances, I consider the recovery of the other branches of my family from the fever (and none of them escaped it) with emotions, such as I should feel had we all been revived from apparent death by the exertions of a humane society. For upwards of six weeks I did not taste animal food, nor fermented liquors of any kind. The quantity of aliment which I took, inclusive of drinks, during this time, was frequently not more than one or two pounds in a day. Yet upon this diet I possessed, for a while, uncommon activity of body. This influence of abstinence upon bodily exertion has been happily illustrated by Dr. Jackson, in his directions for preserving the health of soldiers in hot climates. He tells us, that he walked a hundred miles in three days, in Jamaica, during which time he breakfasted on tea, supped on bread and salad, and drank nothing but lemonade or water. He adds further, that he walked from Edinburgh to London in eleven days and a half, and that he travelled with the most ease when he only breakfasted and supped, and drank nothing but water. The fatigue of riding on horseback is prevented or lessened by abstinence from solid food. Even the horse suffers least from a quick and long journey when he is fed sparingly with hay. These facts add weight to the arguments formerly adduced, in favour of a vegetable diet, in preventing or mitigating the action of the miasmata of malignant fevers upon the system. In both cases the abstraction of stimulus removes the body further from the reach of undue excitement and morbid depression.