According to a Philadelphia reporter, a new drug habit, if it can be so called, has originated and become popular, in that city and in New York. Oxygen inhalation has become, according to him, a fashionable dissipation, and the streets in front of the "oxygen shops" are crowded with the carriages of the wealthy patrons. As yet the poor have not learned of or acquired the taste; it is confined to the well-to-do and the rich. Home treatment is declared to be still more common, and scores of wagons, he says are kept busy carrying the "oxygen pipes" from house to house. So far as we have seen, this new form of stimulation has escaped medical notice, but if there is anything in the report, and it is not entirely an invention of some sensation-mongering newspaper man, it is certainly worthy of attention. We have not seen any notice of