Under tho nboro titlonioiiogriiph by J. β¬1. Shrnder lins bccn issued by tho US. Dcpnrtmcnt of Bgricultiiro (Bulletin 8ti7. Professionnl pnpcr, Sept. 3;1020). Tho iiorinnl nnnunl consumption of cnstor oil in tho United Stntcs is ovor 3 million gnllons, ncnrly all of which is ninnufncturcd locnlly from imported sced. The nrcrnge imports of cnstor sced nniouiitctl nnnunlly to nboiit 834,000 bushels (46 Ib.) during tho five years ending June, 1917. In 1017-18, owing to tho grent deninid for cnstor oil for tho lubricntion of nircrnft cngines, tlic imports rose to over If million bushels, of which GO per cent. cnmo from Indin, 19 per cent. froin South Bnicricn, niid 8 per cent. from tho Wcst Indics. Cnstor sced wns rown locnlly i n tlic United St:itcs chiefly in Oklnfoinn, Knnsns, AIissouri nil41 ~l~ino'is, until nbout 1900, when successful foreign competition n cnrs to ~invo rendcred culiivntion unprofitnlfo ; nnd nlthough tho nctivitics OF tho Burenn of Aircrnft Production resulted in 1918 in tho production of 6760 tons (250,000 bushels) of Amcricnn cnstor wed, tho wssntion of tho wnr nnd tho incrcnscd world production of seed render tho prospects of cnstor seed ns n pcrmnnerit Amcricnn crop soidcd i n t doubtful.