With the Baltic Fleet at Tsushima

R. D. White
1906 Scientific American  
ine oy the sodium, and at thll moment of the separa tion unites with the mercury to form an amalgam, while the sodium combines with the chlorine. The presence of a very small quantity of sodium amalgam exerts a very favorable influence upon the formation of other amalgams, and by its use in the process of obtaining gold and silver by amalgamation, considera ble time is saved and the amalgamation is more com plete. Sodium amalgam is prepared by melting sodium un der petroleum and introducing the
more » ... and introducing the mercury through a very narrow glass tube. Both the metals combine at once, with a very peculiar noise, and the ama1gam hardens to a silver white mass, which, however, must be kept under petroleum until it is to be used, to pre vent the oxidation of the sodium. If sodium amalgam is put into a solution of am monium chloride, it swells to many times its first bulk, rises to the surface of the liquid, and is converted into amalgam of ammonium, which, however, is a very unstable compound, quickly decomposed into ammonia, hydrogen and metallic mercury on exposure to the air. Other Amalgams. Every metal is capable of forming an amalgam with mercury, but it is not necessary to mention these in detail, as none of them, other than the ones already described, is of any technical value. They are all pre: pared in a similar manner. Into the solution of the pure chloride of the metal in question is introduced a corresponding quantity of sodium amalgam. The sodium combines at once with the chlorine, and the liberated metal forms an amalgam with the mercury. Many of these compounds have not as yet been thor oughly examined, and some of them, as for instance the amalgams of nickel, chromium, and cobalt, may yet take an important part in industry _Translated from A. Kl'Upp, Die Legierungen. WITH THE BALTIC FLEET AT TSUSHIMA.* By LIEUT. R. D. WHITE, United States Navy_ INTRODUCTORY NOTE.-The following account is com piled from information obtained from one who was present at the battle. Having no station in battle he was selected to observe and record the events of the battle. This duty he performed with admirable car . e and accuracy. The times of the execution of certain maneuvers and the character of these maneuvers are indisputable. The range he recorded in each case was either measured by Barr and Stroud or was the range used by the twelve-inch guns at the time. The courses steered were recorded with care.
doi:10.1038/scientificamerican08111906-25592supp fatcat:rtcclcltcnf7bmfbomn7fq537a