The evidence of Mr. Brownlow was read to Dr. Weber, who has had under his care between 200 and 300 cases of journeymen tailors who were treated by him, as physician to the St. George’s Dispensary, which is much resorted to by those of that class of workmen who reside at the west end of the metropolis. Dr. Weber confirms the general tenor of the evidence as to the medical facts, and especially the general conclusion that the greatest proportion of the diseases to which they are subject arise from circumstances separable from their occupation. The evidence as to the personal condition and habits of the workmen is generally corroborated by several master tailors, who state that the journeyman tailor in the rural district who works singly, or in a well-ventilated apartment, is in person commonly the opposite of the one described by M. Patissier; he is described as being a hard worker, but at times a man who is in most village foot races, and not unfrequently the foremost runner, and in games of foot-ball not the last. The journeymen tailors are found amongst the best men in the life guards. In consequence of a strike of tailors, one dragoon regiment had a troop chiefly enlisted from them, and military men state that they greatly distinguished themselves. If we thus find the crowding of unventilated places of work injurious—in which persons rarely pass more than 12 out of the 24 hours, being free during the remaining time to breathe what air they please—how much worse should we expect the consequences to be of the same fault in workhouses, hospitals, schools, and prisons, in which individuals often pass both day and night in the same apartments, or if in different apartments, still in the same crowd. Accordingly, since the attention of medical men has been sufficiently directed to the subject, the explanation has become complete of many deplorable cases of general ill health and mortality in such places, attributed at first to deficiency or bad quality of food, or to any cause but the true one,—want of ventilation. A striking illustration of this was afforded in the case of a large school for children during the years 1836 and 1837, as recorded in the second volume of the Poor Law Reports. Such general failure of health and such mortality had occurred among the children as to attract public notice and the animadversions of many medical men and others who visited the schools; but by most the evil was attributed chiefly to faulty nourishment; and it was only after the more complete examination, made by direction of the board, and of which the report is published, as above stated, that the diet was found to be unusually good, but the ventilation very imperfect. Suitable changes were then made; and now, in the same space where 700 children were by illness awakening extensive sympathy, 1100 now enjoy excellent health. The defective state of information on the subject of ventilation is frequently shown in reports