Agnes J. Quirk

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Agnes J. Quirk
Agnes J. Quirk.jpg
Quirk in 1932
Born 1884
Died 1974
Occupation bacteriologist, plant pathologist, inventor

Agnes J. Quirk (fl. 1920s) was an American bacteriologist, plant pathologist, and inventor.[1] She oversaw the culturing of bacteria in the Laboratory of Plant Pathology at the United States Department of Agriculture's Bureau of Plant Industry.[2] She received a patent[3] for the production of penicillin mold and jelly in 1952.[4]

Life and career[edit]

Hired by Erwin Frink Smith, pathologist-in-charge of the Laboratory of Plant Pathology, USDA's Bureau of Plant Industry, Quirk became Smith's assistant in 1901.[5][6] Quirk's research focused on the crown gall oxidation phenomena and culture mediums used in pathogenic analyses, working alongside Nellie A. Brown[5]. Her original job titles at the Laboratory consisted of "laboratory aid" and "scientific assistant".[7]

Selected publications[edit]

  • Quirk AJ (1923). Hydrogen-ion concentration vs. titratable acidity in culture mediums.[7]
  • Quirk AJ, Fawcett, EH (1926). A Begonia Immune to Crowngall: With Observations on other Immune or Semi-Immune Plants[8]
  • Quirk AJ (1931). Pure Smooth and Rough Colony Types at Will: Science Vol. 74 Friday, November 6, 1931, No. 1923
  • Brown, NA, Quirk AJ (1929). Influence of bacteriophage on Bacterium tumefaciens, and some ...
  • Quirk AJ (1934). The Correlation of Animal and Plant Bacterial Behavior and Imposed Culture Aledium Environment. Journal of Bacteriology 1934 (J. Bacteriol. 1934, 27(1):22.)[7]


  1. ^ Staff writer (January 24, 1932). "See Them Now". The Portsmouth Times. Portsmouth, Ohio: John Clark. Retrieved May 1, 2014. 
  2. ^ Padgett, Edward R. (July 30, 1916). Women who do unusual work for Uncle Sam. Sunday Vindicator
  3. ^ United States. Patent Office (1952). Official gazette of the United States Patent Office. The Office. Retrieved 30 March 2012. 
  4. ^ Ogilvie, Marilyn Bailey; Harvey, Joy D. (2000). The biographical dictionary of women in science. 2. L - Z. Taylor & Francis, ISBN 9780415920407
  5. ^ a b Geoffrey Clough Ainsworth (30 June 1981). Introduction to the history of plant pathology. Cambridge University Press. pp. 70–. ISBN 978-0-521-23032-2. Retrieved 30 March 2012. 
  6. ^ Jean Beagle Ristaino (2008). Pioneering women in plant pathology. APS Press. ISBN 978-0-89054-359-7. Retrieved 30 March 2012. 
  7. ^ a b c Agnes J. Quirk (1923). Hydrogen-ion concentration vs. titratable acidity in culture mediums. Retrieved 30 March 2012. 
  8. ^ Ogilvie, Marilyn; Harvey, Joy (2003-12-16). The Biographical Dictionary of Women in Science: Pioneering Lives From Ancient Times to the Mid-20th Century. Routledge. ISBN 9781135963422. 

External links[edit]