Many exercises have been advised with reference to general health and strength. I submit a series possessing peculiar virtues for the consumptive. To him all exercises are not equally profitable. Ten movements of a sort adapted to his special needs are worth a hundred not so adapted. He has a narrow chest and drooping shoulders. This distortion results in displacement of the lungs. And yet he may have legs and hips comparatively vigorous. Ten movements concentrated upon those muscles whose deficiency permits the drooping of the shoulders will be more valuable than a hundred for the legs. There are several hundred muscles in the human body. In every case of consumption certain groups of these muscles are defective. Restoration of the lost symmetry calls for those exercises which will develop the defective groups. Prescribing a walk for a patient whose legs are already vigorous, but whose arms and shoulders are contracted and weak, is like prescribing a medicine because it _is a medicine_, without regard to the nature of the malady. A blister applied to the chest relieves pain within. It accomplishes this by drawing the blood to the surface, and thus subtracting from the congestion at the point of disease. If the blister were applied to the foot or leg, it would not sensibly relieve the congestion in the chest. If, instead of applying a blister, we use exercise as the remedial measure, and by drawing blood into the muscles we would relieve the congestion within, the importance of subtracting from the vessels which bear the blood to the diseased part is not less than in the case of the blister. For the relief or cure of disease in any of the chest organs a few well-directed movements of those muscles about the chest which lack circulation will accomplish more than hours of walking. The intelligent physician, in prescribing muscular training, will not say, simply and generally, "I advise you to exercise," but he will indicate the particular exercises applicable to the case. He will first thoughtfully ask, "What group of muscles is defective?" When he has answered this question accurately, he is prepared for a second,--"What exercises will bring into direct training the defective group?" When these points are settled, he can direct the training wisely. To recommend horseback-riding--good as it is--for _all_ consumptives, is not a whit more discriminating than to prescribe a particular variety of food for all invalids. The medical man who has a general formula for a certain class of patients is hardly more thoughtful than the vender of the "all-healing ointment."