This fatal disease numbers more victims among the female than the male sex. Sex influences, also, the time of development of the symptoms when the affection is hereditary. Thus in males the malady manifests itself about a year and a half later, on the average, than in females.

Dr. Edward Smith, F. R. S., etc., Physician to the Hospital of Consumption and Diseases of the Chest, Brompton, in a review of a large number of cases of consumption, and of the conditions of system and circumstance which had aggravated the disease, says:-

"One striking feature to which we must refer was the greater liability of the female over the male sex to many of the ills to which we have referred. Thus, in reference to the parents, more mothers than fathers had children early, had feeble general health, and had died early. Of the patients, more females than males had mothers who died early, had most relatives who had died of consumption, had parents with one child only, had experienced feeble health and defective appetite through life, had had delicacy of the lungs, were married when very young, had feeble children, had lost most children, had suffered from anxiety, had had measles, scarlet fever, and hooping-cough, had not worn flannel next the skin, had a very defective education, were of susceptible temperament, had brown eyes, florid complexion, and fleshy habit, and had suffered from coldness of the extremities. This is most striking evidence of the liability of females to conditions tending to constitutional disease."