VOL.4, No. 7
ADDITION RBACTION~ OF CONJUGATED DOWLEBONDS
885
" Auwers, Ann.. 373,267
(1910); Ber., 43, 1063 (1910). Thiele, Ann., 308, 339 (1899). Ie Duden and Lemme, Ber.. 35,1339 (1902). Is Straus, Ibid., 42,2866 (1909). l4 Riiber, Ibid., 44, 2976 (1911). '8 Wieland, Ann., 329, 246 (1903). '"Richter, "Chemistry of the Carbon Compounds," Blakiston. " Muller. Ber., 6, 1442 (1873). ' 8 Sommelet, A.Ch.[819,566 (1906). Nef, Ann., 335, 219 (1904). Haubner. M., 12, 546 (1891). Kohler, Am. C h m . J., 38,511 (1907). 'B Thiele, Ann., 306, 105 (1899). Posner, Ibid.. 389, 1 (1912). Claus, Ibid.. 191, 33 (1878). 4L Hinrichsen, Ibid., 336,182 (1904). Autemieth and Retzell. Ber., 36, 1262 (1903). 27 Riiber and Bemer. Ibid.. 54,1954 (1921). 28 Prentice, Ann., 292, 276 (1896). P" Fittig and Barringer, Ibid., 161,309 (1872). Posner, Ber., 42, 2785 (1909); 43, 2665 (1910). Himichsen, Ann.. 336, 327 (1904). 32 Macleod, Am. Chnn. 3..44,331 (1910). as Ann., 306, 115 (1899). Baeyer and Rupe, Ibid., 256, 1 (1890). S6 Riedel and Schulz, Ibid.. 367, 14 (1909). Hinrichsen, Ibid.. 336, 323 (1904). Maire, B1. [41 3, 280 (1908). Maire and Blake, C.?.,142, 215 (1906). JP Posner, Ber.. 34,1395 (1901); 35, 801 (1902). Harries, Ann., 296, 295 (1897). " Kohler, J . Am. Chem.Soc., 38,889 (1916); 41,764 (1919). Lapworth, P. Ch. S., 19, 189 (1903); J. Chem. Sac., 85, 1214 (1904); 97, 38 (1910). Pinner. Ber., 15, 592 (1882); Hames, Ibid.. 32, 1326 (1899). 44 Sokoloff and Latschinoff, I U . , 7, 1387 (1874). '6 Bougault, A . Ch. 18115,491 (1908); C.,1909, I., 530. Borsche, Ann., 375, 145 (1910); Ber., 45, 46 (1912). Straus. Ann., 393, 235 (1912). Posner, Ber.. 34, 1395 (1901); 35, 799 (1902); 37, 502 (1904); 38, 646 (1905); 40, 4788 (1907). l1
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Hypodermic Injection Cures Plant Sickness. Manganese deficiency, a disease afRicting plants that grow in certain types of soils, can be w e d by hypodermic injections with a solution of this necessarymineral, as well as by the more usual method of supplying fertilizers containing it. Dr. Forman T. McLean, of the Rhode Island Agricultural Experiment Station, recently told a Science Service representative of his experiments. He raised a number of plants on soil with all the natural manganese removed, and when they began to show the characteristic symptoms of manganese starvation he injected into their leaves a very weak solution of a salt containing it. The sick plants very promptly recovered.-Scienu Service
