ATABRINE 



30 



AURAMIN 



Atabrine, anti -malarial agent; fluorescence 

 microscopical localization of atabrine 

 in the body (Jailer, J. W., Science, 

 1945, 102, 258-259. 



Atomic Weights. The 11th Report of the 

 Committee on Atomic Weights of the 

 International Union of Chemistry. 

 Baxter, G. P. (chairman) et al., J. Am. 

 Chem. Soc, 1941, 63, 845-850 gives the 

 following as International Atomic 

 Weights, 1941. 



Element Symbol 



Aluminum Al 



Antimony Sb 



Argon A 



Arsenic As 



Barium Ba 



Beryllium Be 



Bismuth Bi 



Boron B 



Bromine Br 



Cadmium Cd 



Calcium Ca 



Carbon C 



Cerium Ce 



Cesium Cs 



Chlorine CI 



Chromium Cr 



Cobalt Co 



Columbium Cb 



Copper Cu 



Dysprosium Dy 



Erbium Er 



Europium Eu 



Fluorine F 



Gadolinium Gd 



Gallium Ga 



Germanium Ge 



Gold Au 



Hafnium Hf 



Helium .' He 



Holmium Ho 



Hydrogen H 



Indium In 



Iodine I 



Iridium Ir 



Iron Fe 



Krypton Kr 



Lanthanum La 



Lead Pb 



Lithium Li 



Lutecium Lu 



Magnesium Mg 



Manganese Mn 



Mercury Hg 



Molybdenum Mo 



Neodymium Nd 



Neon Ne 



Nickel Ni 



Nitrogen N 



Osmium Os 



Oxygen O 



Palladium Pd 



Phosphorus P 



Platinum Pt 



Atomic Atomic 

 Element Symbol Number Weight 



Potassium K 19 39.096 



Praseodymium Pr 59 140.92 



Protactinium Pa 91 231 



Radium Ra 88 226.05 



Radon Rn 86 222 



Rhenium Re 75 186.31 



Rhodium Rh 45 102.91 



Rubidium Rb 37 85.48 



Ruthenium Ru 44 101.7 



Samarium Sm 62 150.43 



Scandium So 21 45.10 



Selenium Se 34 78.96 



Silicon Si 14 28.06 



Silver Ag 47 107.880 



Sodium Na 11 22.997 



Strontium Sr 38 87.63 



Sulfur S 16 32.06 



Tantalum Ta 73 180.88 



Tellurium Te 62 127.61 



Terbium Tb 65 159.2 



Thallium TI 81 204.39 



Thorium Th 90 232.12 



Thulium Tm 69 169.4 



Tin Sn 50 118.70 



Titanitim Ti 22 47.90 



Tungsten W 74 183.92 



Uranium U 92 238.07 



Vanadium V 23 50.95 



Xenon Xe 54 131.3 



Ytterbium Yb 70 173.04 



Yttrium Y 39 88.92 



Zinc Zn 30 65.38 



Zirconium Zr 40 91.22 



Auditory System, see Ear. 



Auer Bodies. A technique whereby red 

 cells are overstained and leucocytes 

 understained has proved helpful for the 

 demonstration of these rod like bodies in 

 leucocytes (Goodwin, A. F., Folia Hae- 

 mat., 1933, 51, 359-366). The smears 

 are colored in the regular fashion by 

 Wright's stain except that water is not 

 added to the stain. 



Auerbach's Plexus. Supravital staining 

 by injecting methylene blue through 

 the aorta is apparently improved by 

 addition of hydrogen acceptors. Scha- 

 badasch. A., Bull. d'Hist. Appl., 1936, 

 13, 1-28, 72-89, 137-151 advises 0.03- 

 0.05 gm. per liter of p-amidophenol, 

 0.02-0.07 of p-phenylenediamine, 0.02- 

 0.05 of pj^rocatechine or 0.05-0.9 of 

 resorcin. The methylene blue must be 

 of high quality and free from metallic 

 salts. He obtained in 5 min. intense 

 staining of the plexus in a cat which re- 

 ceived 1200 cc. of fluid of the following 

 concentration : aq. dest., 1000 cc. ; NaCl, 

 7 gm. ; resorcin, 0.15 gm. and methylene 

 blue (chlorzink free, Hoecht) 0.2 gm. 



Auramin (CI, 655) — canary yellow, pyok- 

 tanin yellow, pyoktaninum aureum — 

 This basic diphenyl methane dye may 

 be of use in fluorescence microscopy. 

 Auramine O is Commission Certified" 



