Show Japs Find Noise Raises Life Lire Span of Rats in Test Tokyo In In the midst of campaigns campaigns cam cain against noise two Tokyo scientists have discovered that white rats kept in an excessively excessively noisy environment have havea a longer life span than those sheltered from abnormal sound Dr and Dr Kunitaro both of the Tokyo Hygienic Laboratory would doubt whether silence after all is good for animal organisms were it not for the fact that their experiments also revealed that white rats rala living in the midst of noise were more nervous grew less had less lell fertility fertil fertil- ity It- and a greater Infant death rate than those kept under normal con con- Live Uve Under Railroad The They began their experiments in 1930 1030 conducting them exhaustively In a spot pot under an elevated railroad rail raU road over which 1238 trains roar daily dally they put 20 white rats to live This group was more nervous and ate less lell although more frequently than the 20 o rats living in normal surroundings Their growth w was a a per cent for the male and per cent for the female taking the growth of the sheltered rats rata as 81 per cent and their Increase was 25 29 per cent while that that- of the other group was 80 per cent Also their young had bad a much higher death rate Cut flut strange to say ay the rats under un tin der the railway lived 53 days das longer in the aggregate than those sheltered shel from sound Dr calculates that thata a da day In the life Ute ofa ofa of ofa a white rat is the equivalent of a month In hi the Ute life of a human being |