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Title page of first edition
Title page of first edition

A History of British Fishes is a natural history book by William Yarrell, serialised in 19 parts from 1835, and then published bound in two volumes in 1836. It is a handbook describing every type of fish then known to occur in the British Isles. Yarrell was a London bookseller and newsagent with the time and income to indulge his interest in natural history. He was a prominent member of several natural history societies, had an extensive library and collection of specimens, and a wide network of naturalist friends who helped him garner material for his writings, notably his book on fishes and the 1843 A History of British Birds. He followed Thomas Bewick's example with up-to-date data, accurate illustrations, and detailed descriptions. The woodcut illustrations were drawn by Alexander Fussell, engraved by John Thompson, and published by John Van Voorst. Yarrell died in 1856; the third edition was produced posthumously. The book was a commercial success and became a standard reference work. (Full article...)

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French soldier wearing the pantalon rouge
French soldier wearing the pantalon rouge

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Tina Turner in 2009
Tina Turner

On this day

May 26: National Sorry Day in Australia; First day of Shavuot (Judaism, 2023); Independence Day in Georgia (1918)

Jimmie Rodgers
Jimmie Rodgers
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Angkor
Angkor

Cambodia has three sites on the list of World Heritage Sites, as designated by the United Nations Educational, Scientific and Cultural Organization (UNESCO). World Heritage Sites have been nominated by signatories to the 1972 UNESCO World Heritage Convention. Cambodia ratified the convention on 28 November 1991. Angkor (pictured) was listed in 1992 when the country was briefly governed by the United Nations mission after the Cambodian–Vietnamese War, in line with the 1991 Paris Peace Agreements. The site was immediately placed on the List of World Heritage in Danger in order to quickly and efficiently deal with urgent problems of conservation. In 2004, Angkor was removed from the endangered list. The Temple of Preah Vihear was listed in 2008 and the Sambor Prei Kuk temple complex in 2018. (Full list...)

Thyroid hormones

Thyroid hormones are hormones produced and released by the thyroid gland, namely triiodothyronine (T3) and thyroxine (T4). They are tyrosine-based hormones that are primarily responsible for regulation of metabolism. T3 and T4 are partially composed of iodine, derived from food. A deficiency of iodine leads to decreased production of T3 and T4, enlarges the thyroid tissue and will cause the disease known as simple goitre. This illustration shows the synthesis of thyroid hormones, as seen on an individual thyroid follicular cell.

Illustration credit: Mikael Häggström

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