The potatoes should be graded into firsts and seconds as they are picked. Two gangs of pickers in charge of competent foremen should be em ployed, one gang to pick up the firsts, the other, the seconds. The less handling the potatoes receive the fewer breaks there will be in the skins. The barrels of firsts and seconds should be lined up in separate rows, to prevent mistakes. The pack should be full, well shaken down and the head forced into place with a barrel press. Then the barrels are headed and stenciled.
The barrels should be new, clean and bright. Proper ventilation can be secured by means of one inch auger holes, fifteen or sixteen in number, bored in the sides.
Potato literature (Fraser).
S. Fraser, The Potato, Orange Judd Company, New York (1905); T. W. Sanders, The Book of the Potato, Collingridge, London (1905); F. B. Van Orman, Potatoes for Profit, tenth edition, Philadel phia, Pa. (1904); W. J. Malden, The Potato in Field and Garden, London (1895): E. S. Carman, The New Potato Culture, Rural Publishing Company, New York (1891) ; Sir J. B. Lawes and J. H. Gilbert,
Composition of Potatoes and Results of Experi ments with Potatoes (1890), Rothamsted Memoirs, Vols. V and VI; E. V. Rodiczky, Die Biographie der Kartoffel, Vienna (1878); J. Reinke and G. Berthold, Die Zersetzung der Kartoffel durch Pilze, Berlin (1879); C. V. Riley, Potato Pests, New York (1876); R. A. Bruckmann et. al., Die Kartoffel and ihre Kultur, Berlin (1876); James Cuthill, Practical Instructions for the Cultivation of the Potato, fifth edition (1872); Alfred Smee, The Potato Plant, London (1846); E. L. Pratt, Observations on the Potato and Remedy for the Potato Plague, Boston (1846); C. F. Dertinger, Solani tuberosi esculenti, Tubir.gx (1774). State experiment station investi tigations are summarized in the Experiment Station Record issued by the Office of Experiment Stations, Department of Agriculture, Washington, D. C. The United States Department of Agriculture has issued two Farmers' Bulletins—No. 35, Potato Culture ; No. 91, Potato Diseases and Treatment.