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Joel Asaph Allen

Joel Asaph Allen is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Joel Asaph Allen rather than just read about it. In short: Joel Asaph Allen (July 19, 1838 – August 29, 1921) was an American zoologist, mammalogist, and ornithologist. He became the first president of the American Ornithologists' Union, the first curator of birds and mammals at the American Museum of Natural History, and the first head of that museum's Department of Ornithology.

Joel Asaph Allen — main illustration
Joel Asaph Allen — illustration

Key takeaways

  • Joel Asaph Allen belongs to astronomy; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Joel Asaph Allen to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Joel Asaph Allen from memory before moving on to harder problems.

Reference excerpt

Joel Asaph Allen (July 19, 1838 – August 29, 1921) was an American zoologist, mammalogist, and ornithologist. He became the first president of the American Ornithologists' Union, the first curator of birds and mammals at the American Museum of Natural History, and the first head of that museum's Department of Ornithology. He is remembered for Allen's rule, which states that the bodies of endotherms (warm-blooded animals) vary in shape with climate, having increased surface area in hot climates to lose heat, and minimized surface area in cold climates, to conserve heat.

Early life Allen was born in Springfield, Massachusetts, the son of Joel Allen and Harriet Trumbull. He studied and collected specimen of natural history early in life, but he was forced to sell his relatively large collection so that he could attend the Wilbraham & Monson Academy in 1861. The following year, he transferred to Harvard University, where he studied under Louis Agassiz.

Career as a field collector of natural history In 1865, Allen took part in the Thayer Expedition, which Agassiz led to Brazil partly to search for evidence of an ice age there, which he later claimed to have found. Returning home in 1866, Allen returned to his family farm in Springfield due to chronic ill health. By 1867, Allen's health had improved enough that he went on a flurry of collecting trips, including at Sodus Bay, and in Illinois, Michigan, and Indiana. Upon his return to Massachusetts, he took the position of curator of birds and mammals at Harvard's Museum of Comparative Zoology. In the winter of 1868–1869, he was one of two ornithologists, the other being Charles Johnson Maynard, to explore the relatively unknown state of Florida, which was still very much a wilderness in the late 1860s. When he returned, he wrote a celebrated analysis of his trip entitled On the Mammals and Winter Birds of Eastern Florida, which was published in 1871. That same year he was elected a Fellow of the American Academy of Arts and Sciences.

For the next few years, Allen ventured to the Great Plains, Rocky Mountains, and Dakota Territory on collecting trips for Harvard's museum. Except for an 1882 collecting trip in Colorado with fellow ornithologist William Brewster, Allen never went field collecting again, primarily because of his fragile health.

Career as a researcher and natural historian Following the end of his field-collecting days, Allen dedicated his life to research and editorial publication. In the early summer of 1876, Allen was elected by the Nuttall Ornithological Club to replace Charles Johnson Maynard and Henry Augustus Purdie as editor of their Bulletin. In 1883, Allen, along with William Brewster and Elliott Coues, created the American Ornithologists' Union. Allen, who was suffering ill health, was unable to attend their inaugural meeting, but was elected their first president, nonetheless. He also became the chief editor of their journal, The Auk. In 1885, he was appointed as the first curator of birds and mammals at the American Museum of Natural History in New York, later becoming the first head of the museum's Department of Ornithology. In 1886, he was one of the incorporators of the first Audubon Society, New York City. He was a member of the American Association for the Advancement of Science, and of the American Philosophical Society. The hundreds of letters which Elliott Coues sent to him over many decades form one of the cornerstones of the history of American ornithology. Allen famously memorialized Coues in the pages of The Auk, the union's journal, after the latter's death in 1899. He formulated what is now known as Allen's rule, stating a correlation between body shape and climate, in 1877.

Bibliography On the Mammals and Winter Birds of Eastern Florida (1871) The American Bisons (1876) History of the American Bison, Bison americanus (1877) Monographs of North American Rodentia (with Elliott Coues 1877) History of North American Pinnipedia (1880) The Right Whale of the North Atlantic (1883) Mammals of Southern Patagonia (1905) The Influence of Physical Conditions in the Genesis of Species (1905) Ontogenetic and Other Variations in Musk-Oxen (1913)

References

External links

Works by Joel Asaph Allen at Project Gutenberg Works by or about Joel Asaph Allen at the Internet Archive National Academy of Sciences Biographical Memoir

Illustrations

Joel Asaph Allen illustration
Joel Asaph Allen: Allen in 1920
Allen in 1920

Worked examples

Example 1 — a first encounter with Joel Asaph Allen

Start with the simplest possible case. Write down what Joel Asaph Allen claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Joel Asaph Allen before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Joel Asaph Allen ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Joel Asaph Allen

In research
Joel Asaph Allen appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Joel Asaph Allen in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Joel Asaph Allen is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1838 births, 1921 deaths, 19th-century American science writers, so understanding it makes those chapters shorter.
In everyday life
Look for Joel Asaph Allen outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Joel Asaph Allen in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Joel Asaph Allen means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Joel Asaph Allen out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Joel Asaph Allen in simple terms?

Joel Asaph Allen (July 19, 1838 – August 29, 1921) was an American zoologist, mammalogist, and ornithologist. He became the first president of the American Ornithologists' Union, the first curator of birds and mammals at the American Museum of Natural History, and the first head of that museum's De…

Why does Joel Asaph Allen matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Joel Asaph Allen?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Joel Asaph Allen.

Tags

  • 1838 births
  • 1921 deaths
  • 19th-century American science writers
  • American ornithologists
  • American zoologists
  • Fellows of the American Academy of Arts and Sciences
  • Harvard University alumni
  • Members of the American Philosophical Society
  • Members of the United States National Academy of Sciences
  • Scientists from Springfield, Massachusetts
  • Writers from Springfield, Massachusetts

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