[page] 808

CROSS BREEDING: Mr. Darwin, who has been much occupied in an inquiry into subjects of this kind, would be greatly obliged to any practical correspondent who may favour him with his experience as to Leguminous crops. Perhaps our friend at Bromsgrove may have something to say. The main questions are—do Leguminous crops, when grown together, sometimes cross; or may they be invariably grown together without any chance of deterioration? We should like to have the inquiry extended, and to know whether Leguminous plants with papilionaceous flowers ever cross accidentally. The case of the Laburnum and Purple Cytisus producing the Cytisus Adami should be disregarded, its history being very obscure, and probably wholly unconnected with cross breeding.