The question whether plants may be safely grown in living rooms is now settled by scientific men, who show that whatever deleterious gases may be given out by plants at night they are so minute in quantity that no injury is ever done by their presence in the rooms and by being inhaled. Though we were glad to see the question disposed of by such authority, experience had already shown that no bad effects ever resulted from living in apartments where plants were grown. Our greenhouses are one mass of foliage, and I much doubt if any healthier class of men can be found than those engaged in the care of plants. But timid persons may say that the deleterious gases are given out only at night, while our greenhouse operatives are only employed in daylight. This is only true in part. Our watchmen and men engaged in attending to fires at night make the warm greenhouses their sitting-room and their sleeping-room, and I have yet to hear of the first instance where the slightest injury resulted from this practice. Many of our medical practitioners run in old ruts. Some Solomon among them probably gave out this dogma a century ago, it was made the convenient scapegoat of some other cause of sickness, and the rank and file have followed in his train. A belief in this error often consigns to the cellar, or to the cold winds of winter, the treasured floral pets of a household.