The electron microscope was invented
In 1931, the electron microscope was invented by Max Knoll and Ernst Ruska at the Berlin Technische Hochschule….
In 1931, the electron microscope was invented by Max Knoll and Ernst Ruska at the Berlin Technische Hochschule….
In 1931, Drs. Ralph Falk and Don Baxter launched the Don Baxter Intravenous Products Corporation, the first commercial…
In 1931, H. Trendley Dean and Elias Elvove started work on the mystery of “mottled enamel” — later…
In 1931, Rolla E. Dyer, Lucius F. Badger, and Adolph S. Rumreich demonstrated that Rocky Mountain spotted fever…
In 1931, The Journal of Cancer Research (published quarterly from 1916-1930 became the American Journal of Cancer (published…
In 1931, Rockefeller Institute investigator Richard Shope published the first of three landmark papers that established the etiology…
In 1931, The Cook County School of Nursing opened in the former Illinois Training School for Nurses, now…
On May 7, 1930, the McNary-Mapes Amendment to the Pure Food and Drugs Act was passed. The so-called…
On Mar. 7, 1930, Stanley Miller, an American chemist and biologist known for his studies into the origin…
Founded in 1930, the Woods Hole Oceanographic Institution was formed as part of the Marine Biological Laboratory and…
In 1930, the Ransdell Act changed the name of the Hygienic Laboratory to National Institute (singular) of Health…
In 1930, Sara E. Branham identified a new organism, Neisseria flavescens, as a rare cause of meningitis and…
In 1930, Maurice I. Smith, Elias Elvove and their collaborators discovered the cause of “Jamaican Ginger” paralysis.
In 1930, Maurice I. Smith developed a quantitative colorimetric reaction for the ergot alkaloids.
In 1930, Ralph Lillie demonstrated that the cause of psittacosis was a rickettsia-like organism (later placed in the…
In 1930, the name of the Food, Drug, and Insecticide Administration was shortened to Food and Drug Administration…
In 1930, Ernest Everett Just, an African American biologist, became the first American to be invited to the…
In 1930, the U.S. Congress passed the Plant Patent Act, recognizing for the first time that plant breeders’…
In 1930, the Hygienic Laboratory changed its name to the National Institute (singular) of Health and authorized the…
In 1930, Garst & Thomas Hybrid Corn Company was founded in Coon Rapids, Iowa, and from 1930-1945, U.S….
In 1930, the Mallinckrodt Institute of Radiology (MIR) at Washington University School of Medicine (WUSM) was established, funded…
In 1930, Johnsonï¾ &ï¾ Johnson established operations in Mexico and South Africa.
In 1930, Pablum, the first processed for babies, was developed by pediatricians Frederick Tisdall, Theodore Drake and Alan…
On Oct. 29, 1929, the “Black Tuesday” stock market crash was the most devastating financial collapse in the…
On May 29, 1929, Senator W. J. Harris, Georgia, introduced S. 4531, authorizing a survey in connection with…
On Apr. 23, 1929, Senator W. J. Harris, Georgia, introduced S. 466, “To authorize the Public Health Service…
On Feb. 28, 1929, the Walter Reed Medal, a military decoration of the U.S. Army was created by…
In 1929, the Priestley Medal was awarded to Francis P. Garvan by the American Chemical Society “to recognize…
In 1929, Philip Drinker and Louis Shaw developed the ‘iron lung’ to aid respiration.
On May 4, 1929, Clarence Cook Little founded The Roscoe B. Jackson Memorial Laboratory in Bar Harbor, Maine,…