Of late years a disease has attacked Chrysanthemums, which seriously detracts from the pleasure of their culture. The leaves are attacked by a fungus in early summer, and by autumn there are but few leaves left on the lower portions of the plants, the flower stems are weak, and proportionately small. Mr. Worthington G. Smith finds the fungus to be one closely allied to the famous grape mildew, and that it is the Oidium Chrysanthemi of Raben-horst. As figured in the Gardeners' Chronicle, magnified four hundred times, the plant is upright, in three or five segments, representing a link of sausages, the topmost one of which is shorter and thicker than the one next to and attached to the Chrysanthemum. As sulphur was found to be of so much value in the grape mildew, it may be of equal service here.