. Cyclopedia of farm crops. Farm produce; Agriculture. 380 HOPS HOPS Literature. M. Molliard, Experimental Investigations on Hemp, Bui. Soc. Bot., France, 50, 1903; Viner, Experiments with Hemp, Khozyaene, 1901, No. 47, 48; Rev. in Zhur. Opuitn. Agron. (Jour. Expt. Landw.), 3 (1902), No. 2, pp 248-249; Dewey, The Hemp Industry in the United States, United States Department of Agriculture, Yearbook 1901, pp. 541-554; Boyce, Hemp,—a Practical Trea- tise on the Culture of Hemp for Seed and Fiber, with a Sketch of the History and Nature of the Hemp Plant, Orange Judd Company, New York, 1900. in e.
. Cyclopedia of farm crops. Farm produce; Agriculture. 380 HOPS HOPS Literature. M. Molliard, Experimental Investigations on Hemp, Bui. Soc. Bot., France, 50, 1903; Viner, Experiments with Hemp, Khozyaene, 1901, No. 47, 48; Rev. in Zhur. Opuitn. Agron. (Jour. Expt. Landw.), 3 (1902), No. 2, pp 248-249; Dewey, The Hemp Industry in the United States, United States Department of Agriculture, Yearbook 1901, pp. 541-554; Boyce, Hemp,—a Practical Trea- tise on the Culture of Hemp for Seed and Fiber, with a Sketch of the History and Nature of the Hemp Plant, Orange Judd Company, New York, 1900. in hot weather, sometimes increasing in length as much as a foot a day. The stems cling closely to a pole or string and, when once well started, will follow it with very little trouble. The growth is almost wholly increase in length until the beginning of the flowering period (mid-July in HOPS. Humulus Urticacecc. Figs. Lupulus, 572-576. ^"^"- -==J By Jared Van Wagenen, Jr. A perennial twining herb produ- cing burs or "hops" that are used in the making of beer. It has long shoots often reaching twenty-five to thirty feet in a season; rough hairy, the stems having minute prickles pointing downward ; leaves ovate or orbicular-ovate in general outline, deeply three-lobed (sometimes five- to seven-lobed), or the upper ones not lobed ; mar- gins strongly and uniformly dentate ; petioles long; staminate flowers in panicles two to six inches long; hops (mature pistillate catkins) oblong or ovoid, loose and papery, straw-yellow, often two inches or more long, glandular and odoriferous. The hop has a tough, fibrous inner Ijark and a color- less juice which makes an indelible stain on white fabrics. The stems climb as much as thirty feet high by the beginning of the flowering period, lengthen- ing from a well-marked terminal "head," and nor- mally twining by rotating spirally around their sup- ports, "clock-wise" or "fol- lowing the su
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