This depends on the condition of the bill. In normal used condition, they are worth exactly $2. $2 bills dated 1976 and newer are the ones worth face value only. The $3/$4 figure is reasonable for bills dating back to the 1950s.
Klein thought he had, discovered the poison to be due to a disease of the cow. An epidemic of scarlet fever broke out in London in December, 1885, and the outbreak could be traced to the milk supplied by a herd in Hendon.
Share this page on your website: Semmelweis' germ theory was introduced when Semmelweis saw a connection between puerperal fever and disinfected hands of the hospital staff.Don't miss these related articles:emmelweis and Handwashing. Semmelweis discovered that puerperal sepsis (a type of septicaemia) commonly known as childbed fever in new mothers could be prevented if doctors washed their hands. Based on his analysis, he established a simple but revolutionary prophylaxis system in 1847.