In the report of the Department of Agriculture, 1888, Mr. B. T. Galloway discusses the above disease of the tomato. The disease generally appears at the apex of the fruit when onespot, which rapidly increases in size. As the disease progresses, the tissue beneath the diseased area collapses and the fruit, as a result, becomes flattened. This flattened area becomes hard and leathery, and assumes a greenish black velvety appearance. The author finds this disease to be the result of two species of fungi, the Macrosporium tomato and the Fusarium solani.

The author advises the burning in the fall of old vines, also the burning or burial of all affected fruit, in order to destroy as much of the infecting material as possible. The excessive use of stable manure is not advised, inasmuch as it is believed that thereby the tendency of the fruit to crack is increased, the fissures thus caused opening the way to the entrance of spores. No experiments with fungicides have yet been tried.