Show tl Newly vly Discovered Heavy V Water Vater ter Will Kill Tadpoles Guppies and Worms 1 PRINCETON N N. J. J Oct 11 SS SS- SS Heavy water containing the recently discovered double weight hydrogen kil kills tadpoles guppy fish and worms Professor W. W W W. Swingle of Princeton Princeton Prince Prince- ton using wIng some of the rare heavy water manufactured by Princeton chemists chemist found that the extraordinary HJO with 92 per cent of Its it hydrogen hy hr hy- hy drogen atoms consisting of the Isotope miL mass mais two deuterium is u lethal to cere tam tain fresh water animals Green frog tadpoles survived only an hour when placed in the heavy wate water Tadpoles of the same sort ort im immersed immersed im- im mersed in distilled water that contained con n. n tamed only 30 per cent heavy water lived happily and unaffected for 24 hours Paramecia one celled organisms organisms organ organ- isms that arc are favorite biology experimental mental material resisted the heavy water successfully for or 24 2 hours Relatively large quantities of h heavy vy water are nrc now bein being produced in Princeton's rick Frick chemical laboratory by Professor Hugh S. S Taylor Professor sor SOl Henry Eyring and Arthur A. A Frost chemistry fellow A cubic centimeter 3 approximately a thimbleful of the heavy water is produced every two days dos This unusual supply of heavy water Is allowing Princeton scientists scientist to use It in various untried J meats Professor or Earlc J E. E Caley has demo dern I that it has hM a smaller capao capac ity for dissolving of salts than or or- 4 water Tests arc now being being- 1 made to ascertain its It eUe eLfe effect t uPOn upon 1 J acids Physicists studying the structure of the atom will find lint the tho heavy water of great use 1 because most of it its hy 1 drogen atoms are twice the ordinary J J i hydrogen mass Experiments have shown that in attempts to break dow down 1 the atom tom by collision with electrical electrical- 1 I ly propelled hydrogen projectiles much smaller voltages ore are required wh when n heavy water Is used 4 S Professor Taylor explained th there Is one part of heavy water In every parts of oC ordinary Prince ton rain water Twelve hundred gal gaj gal i Ions of ordinary water arc are treated In in order to produce three ounces of ot heavy water The Tho new substance has become one of the most valuable J known In the commercial field A Aprice Aprice price of is asked for a gram At thU rate a teaspoonful Is worth nearly near near- Iy ly and a quart Prince 1 1 ton now has on hand about a glassful glassful glass glass- 1 I ful and Is U about to raise it its production tion to a 3 thimbleful a day J What effect the drinking of heavy 4 water will have on animals and human human hu- hu J man beings is not yet known but It I Is believed it may bring on a n fever 1 and therefore might be useful In dEs db 1 cases eases that arc are treated by raising body temperatures |