Medicine: Viruses Analyzed

In the 1870s Louis Pasteur and Robert Koch showed that microscopic germs cause diseases like anthrax, rabies, tuberculosis. Sixty years later and with vastly improved microscopes, bacteriologists are unable to see any germ positively responsible for smallpox, measles, infantile paralysis, the common cold. That invisible, specific contagia cause these diseases and many an-other is certain. Medical scientists call those submicroscopic substances viruses. But they do not know their true nature, and hence cannot scientifically prevent common colds or infantile paralysis (see p. 36).

Last winter Chemist Wendell Meredith Stanley of the Rockefeller...

Want the full story?

Subscribe Now

Subscribe
Subscribe

Get TIME the way you want it

  • One Week Digital Pass — $4.99
  • Monthly Pay-As-You-Go DIGITAL ACCESS$2.99
  • One Year ALL ACCESSJust $30!   Best Deal!
    Print Magazine + Digital Edition + Subscriber-only Content on TIME.com

Learn more about the benefits of being a TIME subscriber

If you are already a subscriber sign up — registration is free!