“This method of proceeding has demonstrated to us that the works of which we speak, far from being the fruit of long observation, have been composed in the silence of the cabinet by men who have only had a casual view of artisans and manufactures; and who, generalizing a few facts presented to them by accident, have singularly exaggerated the inconveniencies of some professions, and attributed to others influences which they are far from exercising.”—_Mémoire sur les Véritables Influences du Tabac sur la Santé des Ouvriers._ Par M. Parent Du Châtelet. They give, as an illustration, the exaggerated accounts of the manufacture of tobacco, of which the supposed evils are proved to be entirely fictitious, or at best an erroneous application to the manufacture,—of effects which, though incidentally met with in the workmen, were equally common to others of their station. In an abstract of their paper, inserted in the Appendix, there is even an enumeration, by eminent physicians, of specific cases of death from the fancied agency of tobacco, but they only show the extent of error produced in this and kindred instances by the previous conviction of the noxious influence of particular circumstances, and by referring all existing maladies to these without further inquiry. If I might add my testimony on this point, derived from my own observations on two of the commissions of inquiry on which I have had the honour to serve, it would be entirely in corroboration of the above statement. On comparing the actual condition of workmen with the medical descriptions of these diseases, and the causes, we commonly found that the results of a cluster of causes are commonly ascribed to one; and in respect to several classes of workmen the real cause, the invariable antecedent, such as defective ventilation, is unnoticed. No persons were frequently more surprised than the intelligent workmen, by the frequent exaggerated accounts of the operations of particular causes upon them, and the erroneous association of effects to causes with which they were known to have no real connexion. For example, in the work of M. Patissier, one which is the chief work, and of European authority, on the diseases of artisans, he adverts to the diseases of tailors. His description was read to _Mr. Brownlow_, the tailor, examined upon the subject of the overcrowding of places of work, and the observations of that witness on the statement of M. Patissier are given in answer:— _M. Patissier._ “The employment of tailor is one of the most sedentary: seated constantly on a board, his legs crossed, his body stooping forward, this class of labourers exercises not part of the body but the arms, and that only the right one.”