. . "The receptacle 25 preferably'is of sufiicient length to accommodate celery of ordinary length, and of sufficient width and depth to accommodate vegetables such as head lettuce or the like- Thus a receptacle of substantially 14 inches in length, 7 inches in width and 4 inches in depth has been found satisfactory.- The cover may be, though not necessarily, separate from either. the receptacle 25 or" . . .