3558.     VERESHCHAGIN, L. F., AND ZELINSKIĬ, N. D.  [Chemical Reactions at High Pressures and Temperatures.  I.  Apparatus for the Study of Chemical Reactions at Pressures up to 5,000 Atmospheres and High Temperatures.]  Bull. acad. sci. U.R.S.S., Classe sci. chim., 1943, pp. 443-452 (English summary); Chem. Abs., vol. 39, 1945, p. 1587.

        Apparatus is described (with diagrams) for the study of reactions up to 5,000 atm. and 400.  The use of hydraulic compressors in conjunction with gas pressure as the generator of pressure permits considerable improvement in the technique of work of this type.  The use of Hg as the hydraulic fluid (as previously used) is undesirable for several reasons, 1 of which is the entry of Hg into reactions under the experimental conditions.