Alexander von Humboldt

Martin Heinrich Klaproth and the Analytical Chemistry

Martin Heinrich Klaproth and the Analytical Chemistry

On December 1, 1743, German chemist Martin Heinrich Klaproth was born. Klaproth became well known a founder of analytical chemistry discovered uranium (1789), zirconium (1789), cerium (1803), and contributed to the identification of others. Although he did not isolate them as pure metal samples, he was able to recognize them as new elements. Youth and Education Martin Heinrich Klaproth was born in Wernigerode as the child of a poor tailor. After attending…
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William Joscelyn Arkell and the Jurassic Period

William Joscelyn Arkell and the Jurassic Period

On June 9, 1904, British geologist and paleontologist William Joscelyn Arkell was born. Arkell is regarded as the leading authority on the Jurassic Period during the middle part of the 20th century. His work includes the classification of Jurassic ammonites and an interpretation of the environments of that period. In 1946, his “Standard of the European Jurassic” advocated a commission formulate a code of rules for stratigraphical nomenclature. William Joscelyn Arkell –…
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Christian Gottfried Ehrenberg – Father of Micropaleontology

Christian Gottfried Ehrenberg – Father of Micropaleontology

On April 19, 1795, German naturalist, zoologist, comparative anatomist, geologist, and microscopist Christian Gottfried Ehrenberg was born. Ehrenberg was one of the most famous and productive scientists of his time. He has been called the founder of micropaleontology (the study of fossil microorganisms). He held that animals, of any size down to the tiniest, have organ systems in common, including muscles, reproductive organs, and stomachs. Christian Gottfried Ehrenberg – Early Years Christian Gottfried Ehrenberg…
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Ida Henrietta Hyde and the Microelectrode

Ida Henrietta Hyde and the Microelectrode

On September 8, 1857, American physiologist Ida Henrietta Hyde was born. Hyde is known for developing a micro-electrode powerful enough to stimulate tissue chemically or electronically, yet small enough to inject or remove tissue from a cell. The microelectrode has been said to have revolutionized neurophysiology. Ida Henrietta Hyde – Early Years Ida Henrietta Hyde grew up in Chicago, where she was sent to a public school. In 1871, the family home…
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The Botanical Collections of José Celestino Mutis

The Botanical Collections of José Celestino Mutis

On April 6, 1732, Spanish priest, botanist and mathematician José Celestino Mutis was born. Between 1783 and 1808, Mutis tirelessly led an extraordinary endeavor to collect and illustrate the plants of Colombia, assembling one of the richest botanical collections in the world of his time. José Celestino Mutis – Becoming a Botanist José Celestino Mutis began studying medicine at the College of Surgery in Cádiz. There, Mutis also studied physics, chemistry, and…
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Joseph Louis Gay-Lussac and his Work on Gases

Joseph Louis Gay-Lussac and his Work on Gases

On December 6, 1778, French chemist and physicist Joseph Louis Gay-Lussac was born. He is known mostly for two laws related to gases, and for his work on alcohol-water mixtures, which led to the degrees Gay-Lussac used to measure alcoholic beverages in many countries. “I have not chosen a career that will lead me to a great fortune, but not my principal ambition. In fact, later in life he enjoyed comfortable income…
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John Lloyd Stephens and the Archeology of Middle America

John Lloyd Stephens and the Archeology of Middle America

On November 28,  1805, American explorer, writer, and diplomat John Lloyd Stephens was born. Stephens was a pivotal figure in the rediscovery of Maya civilization throughout Middle America and in the planning of the Panama railroad. His exploration of Maya ruins in Central America and Mexico generated the archaeology of Middle America. John Lloyd Stephens was born in the township of Shrewsbury, New Jersey, as the second son of Benjamin Stephens, a…
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