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The Origin of Species: "Chapter Thirteen: Mutual Affinities of Organic Beings: Morphology: Embryology: Rudimentary Organs" (1859), by Charles R. Darwin
By: M. Elizabeth Barnes
| Published: Jul 11, 2014
Mutual Affinities of Organic Beings: Morphology: Embryology: Rudimentary Organs is the thirteenth chapter of Charles Darwin's book The Origin of…
LiteratureEvolutionEvolution (Biology)Natural selectionEmbryology
Johann Friedrich Blumenbach (1752-1840)
By: Kate MacCord
| Published: Jan 22, 2014
In eighteenth century Germany, Johann Friedrich Blumenbach studied how individuals within a species vary, and to explain such variations, he proposed…
AnthropologyAnatomy, ComparativeVariation (Biology)EmbryosDevelopmental Biology
Edward Drinker Cope (1840-1897)
By: Karla T. Moeller
| Published: Jan 01, 2012
Edward Drinker Cope studied fossils and anatomy in the US in the late nineteenth century. Based on his observations of skeletal morphology, Cope…
PeopleBiographyAnatomyEvolution
Emil Kraepelin (1856–1926)
By: James Walter Dennert
| Published: May 07, 2021
Emil Kraepelin was a physician who studied people with mental illness in the late nineteenth and early twentieth centuries in modern-day Germany.…
Comparative psychiatryMental illnessMental DisordersDual diagnosisMental illness--Bibliography
Elizabeth Dexter Hay (1927–2007)
By: Kevin Gleason
| Published: Jul 26, 2017
Elizabeth Dexter Hay studied the cellular processes that affect development of embryos in the US during the mid-twentieth and early twenty-first…
Electron microscopesExtracellular matrixCorneaCollagenRadioactive substances
Sheppard-Towner Maternity and Infancy Protection Act (1921)
By: Katherine Madgett
| Published: May 18, 2017
In November 1921, US Congress passed the National Maternity and Infancy Protection Act, also called the Sheppard-Towner Act. The Act provided federal…
LawPrenatal care--Law and legislationMaternal and infant welfare--United StatesPregnancyBirth
Webster v. Reproductive Health Services (1989)
By: Carolina J. Abboud
| Published: Feb 26, 2017
In the 1989 case Webster v. Reproductive Health Services, the US Supreme Court upheld the constitutionality of a Missouri law regulating abortion…
LawBirth control clinicsAbortionFamily planning servicesAbortion--Law and legislation--United States
The Kallikak Family: A Study in the Heredity of Feeble-Mindedness (1912), by Henry Herbert Goddard
By: James W. Dennert
| Published: Jul 30, 2021
In 1912, Henry Herbert Goddard published The Kallikak Family: A Study in the Heredity of Feeble-Mindedness, hereafter The Kallikak Family, in which…
LiteratureIntellectual DisabilityMental DeficiencyEugenicsEugenics--United States--History
Mammography
By: Dina A. Lienhard
| Published: Mar 25, 2018
Mammography or mastography is an imaging technology used in the twentieth century for the detection of breast cancer and other breast abnormalities.…
TechnologyTomosynthesisBreast--RadiographyMammographyBreast--Cancer--Imaging--Congresses
Noninvasive Fetal Aneuploidy Detection for Trisomy 21, 13, and 18
By: Cassidy Possehl
| Published: Apr 06, 2017
Noninvasive fetal aneuploidy detection technology allows for the detection of fetal genetic conditions, specifically having three chromosomes, a…
TechnologyDown syndromeAneuploidyLo, Y. M. DennisCleft Palate