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INDUSTRIAL AND ENGINEERING CHEMISTRY
Literature Cited Beadle and Stevens, J. SOC.Chem. Ind., 30, 1421 (1911). Beaver and Keller, IND.EXG.CHEM.,20, 817 (1928). Boggs and Blake, Ibid., 22, 748 (1930). Bradley, J . Phys. Chem., 43, 663 (1939). Davis and Blake, “Chemistry and Technology of Rubber”, A. C. S. Monograph 74, p. 385, New York, Reinhold Publishing Corp., 1937. (6) Ibid., p. 479. (7) Depew, IND. ENG.CHEM.,21, 1027 (1929). (8) Dillon, Physics, 7, 23 (1936). (9) Dinsmore, IND. ENG.CHEM.,21, 722 (1929). (IO) Dinsmore and Vogt, Rubber Age (N. Y . ) ,73, 554 (1928). (11) Ditmar and Preuss, Gummi-Ztg., 45, 243 (1930). (12) Garvey, IND. ENG.CHEM.,26,434 (1934). (13) Ibid., 29, 208 (1937). (14) Garvey and Forman, Ibid., 30, 1036 (1938). (16) Garvey and White, Ibid., 25, 1042 (1933). (16) Goodwin and Park, Ibid., 20, 621 (1928); Carson and Sebrell, Ibid., 21, 911 (1929). (17) Johnson, Ibid., 20, 904 (1928). (18) Ibid., 21, 1288 (1929). (19) Jones, 8. C., private communication. ENG.CHEM.,14, 196 (1922). (20) Kelly, IND. (21) LeBlanc, Krbger, and Kloz, Kolloidchem. Beihefte, 20,365 (1925). (1) (2) (3) (4) (5)
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(22) Menadue, I n d i a Rubber J . , 85, 689, 717; 86,23,53 (1933). (23) Meyer and Mark, Ber., 61, 1939 (1928). (24) Midgley, Henne, and Shepard, J. Am. Chem. SOC.,56, 1326 (1934). (25) Park and McClellan, IND. ENG.CHEM.,30, 704 (1938). (26) Pohle, Kolloid-Z., 39, 1 (1926). (27) Rossem, van, I n d i a Rubber J., 92, 845 (1936). (28) Schoenfeld, IND. ENG.CHEM.,27, 571 (1935). (29) Spear and Moore, Ibid., 18, 418 (1926). (30) Spence and Ferry, J. SOC.Chem. I d . , 56, 246T (1937). (31) Stevens, Ibid., 27, 37T (1928). (32) Stevens and Popham, Ibid., 57, 128 (1938). (33) Stevens and Stevens, Ibid., 51,44T (1932). EKG.CHEM.,17, 1165 (1925). (34) Thies, IND. (35) Twiss, J. Sac. Chem. Ind., 44, 106T (1925). (36) Twiss and Murphy, Ibid., 45, 121T (1926). (37) Weber, I n d i a Rubber J., 25, 69 (1903). (38) Wiegand, Can. Chem. Met., 21, 35 (1937). (39) Wiegand and Snyder, IND. ENG. CHEM.,23, 646 (1931). (40) Wiegand and Snyder, Proc. Rubber Tech. Conf., London, 1938, 484. (41) Williams, J., IND.ENG.CHEM.,16, 362 (1924). (42) Ibid., 26, 746 (1934). (43) Ibid., 26, 1190 (1934). (44) Williams, Proc. Rubber Tech. Con/., London, 1938, 304. (45) Winkleman and Croakman, IND. ENG.CHEM.,22, 865 (1930).
KING FREDERICK WILLIAM I IN THE LABORATORY By AugusdjBorckmann
No. 107 in the Berolzheimer series of Alchemical and Historical Reproductions presents Frederick William I, King of Prussia, in the laboratory of his palace pharmacy in Berlin. He was the father of Frederick the Great, was born in 1688, and reigned from 1713 to 1740. He devoted the last twenty years of his reign to improving the internal and financial conditions in Prussia. This required money, hence it is natural that he should turn to alchemy. Evidently he is being shown the result of a trangmutation experiment. August Borckmann was a historical genre painter. He was born in Berlin in 1827 and died there in 1890. He studied at the Berlin Academy, where much of his work was exhibited.
D. D. BEROLZHBIMBR 50 East 41st Street New York, N. Y.
A complctc list of thc first 96 reproductions appcaicd in o,,r January, 1939, issue, pagc 124. An additional reproduction appears each month
