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John Graham Kerr
Sir John Graham Kerr (18 September 1869 – 21 April 1957), known to his friends as Graham Kerr, was a British embryologist and Unionist Member of Parliament (MP). He is best known for his studies of the embryology of lungfishes. He was involved in ship camouflage in the First World War, and through his pupil Hugh B. Cott influenced military camouflage thinking in the Second World War also. Early life He was born at Rowley Lodge, in Arkley in Hertfordshire, to Scottish parents: James Kerr, former Principal of Hooghly College in Calcutta, and his wife, Sybella Graham. Kerr was educated at the Royal High School, Edinburgh, and then studied medicine at the University of Edinburgh. Zoology Kerr interrupted his medical studies to join an Argentinian expedition to study the natural history of the Pilcomayo River. On his return, he studied natural sciences at Christ's College, Cambridge, graduating with first class honours in 1896. The Argentinian expedition had ended with the los ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arkley
Arkley is an area of north London, England, within the London Borough of Barnet. It is located north-northwest of Charing Cross. It consists of a long village strung out between Barnet and Stirling Corner, roughly centred on the "Gate" pub, and composed of the ancient hamlets of Barnet Gate, Rowley Green and Arkley. At above sea level, Arkley is one of the highest points in London. History Toponymy The origins of the name ''Arkley'' are unclear; it is first recorded as ''Arkleyslond'' in 1332. The first element of the name appears to come from the Old English word ''(e)arc'' (or ark, meaning a chest, bin or other wooden receptacle), while the second element is from ''leāh'', a woodland clearing or glade. ''–lond'' in the earlier name means "cultivated ground". The name ''Arkley'' would thus mean "woodland clearing by the ark or by the place where arks are made". Historical background It is thought by some that Hendon Wood Lane was originally a minor Roman road. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First World War
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fighting occurring throughout Europe, the Middle East, Africa, the Pacific, and parts of Asia. An estimated 9 million soldiers were killed in combat, plus another 23 million wounded, while 5 million civilians died as a result of military action, hunger, and disease. Millions more died in genocides within the Ottoman Empire and in the 1918 influenza pandemic, which was exacerbated by the movement of combatants during the war. Prior to 1914, the European great powers were divided between the Triple Entente (comprising France, Russia, and Britain) and the Triple Alliance (containing Germany, Austria-Hungary, and Italy). Tensions in the Balkans came to a head on 28 June 1914, following the assassination of Archduke Franz Ferdina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Budgett's Frog
''Lepidobatrachus'' is a genus of ceratophryidid frogs. They are commonly known as Paraguay horned frogs or Budgett's frogs (in honor of John Samuel Budgett, who described the genus), although the latter technically describes a specific species, '' Lepidobatrachus laevis''. Geographic range ''Lepidobatrachus'' are found in South America, in Paraguay, Argentina, Brazil, and Bolivia. Description ''Lepidobatrachus'' frogs are generally a light, olive green in color, sometimes with lighter green or yellow mottling. They have a rounded, flattened body with eyes set high on their head. They have short limbs, which make them inefficient swimmers. They do not have teeth, but they do have two sharp protrusions, common to all Ceratophryidae The Ceratophryidae, also known as common horned frogs, are a family of frogs found in South America. It is a relatively small family with three extant genera and 12 species. Despite the common name, not all species in the family have the hor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frog
A frog is any member of a diverse and largely Carnivore, carnivorous group of short-bodied, tailless amphibians composing the order (biology), order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-frog" ''Triadobatrachus'' is known from the Early Triassic of Madagascar, but molecular clock, molecular clock dating suggests their split from other amphibians may extend further back to the Permian, 265 Myr, million years ago. Frogs are widely distributed, ranging from the tropics to subarctic regions, but the greatest concentration of species diversity is in tropical rainforest. Frogs account for around 88% of extant amphibian species. They are also one of the five most diverse vertebrate orders. Warty frog species tend to be called toads, but the distinction between frogs and toads is informal, not from Taxonomy (biology), taxonomy or evolutionary history. An adult frog has a stout body, protruding eyes, anteriorly-attached tongue, limb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Samuel Budgett
John Samuel Budgett (16 June 1872 – 19 January 1904) was a British zoologist and embryologist. He spent most of his short career on the genus ''Polypterus'' (bichir). This is found in the lakes, river margins, swamps, and floodplains of tropical central and western Africa and the Nile River system. Zoologists at the time wondered whether it was a bony fish, a cartilaginous fish, a lungfish or a primitive amphibian. Forty years after the publication of Darwin’s Origin of Species, zoologists were seeking to map the history of species and this primitive animal was a key part of the map. To find its place there, it was necessary to observe juvenile ''Polypterus'' in the wild. It took Budgett four African expeditions but in the end he succeeded in doing so. However, the long periods spent in swampy, mosquito-ridden places left him debilitated with malaria and he died of blackwater fever shortly after his return to England. This happened on the very day that he was supposed t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South American Lungfish
The South American lungfish (''Lepidosiren paradoxa'') is the single species of lungfish found in swamps and slow-moving waters of the Amazon, Paraguay, and lower Paraná River basins in South America. Notable as an obligate air-breather, it is the sole member of its family Lepidosirenidae. Relatively little is known about the South American lungfish. Additional common names include American mud-fish and scaly salamanderfish. The South American Lungfish have adapted to cope with both droughts and floods. This is normal due to the South American Lungfish adapting pulmonary mechanoreceptors. In Brazil, it is known by the indigenous language Tupi name , which means "snake-fish" (), and synonyms (), (), and (). The immature lungfish is spotted with gold on a black background; in the adult, this fades to a brown or gray color.Animal-worldSouth American Lungfish./ref> Its tooth-bearing premaxillary and maxillary bones are fused as in all Dipnoi. South American lungfish also share ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gran Chaco
The Gran Chaco or Dry Chaco is a sparsely populated, hot and semiarid lowland natural region of the Río de la Plata basin, divided among eastern Bolivia, western Paraguay, northern Argentina, and a portion of the Brazilian states of Mato Grosso and Mato Grosso do Sul, where it is connected with the Pantanal region. This land is sometimes called the Chaco Plain. Toponymy The name Chaco comes from a word in Quechua, an indigenous language from the Andes and highlands of South America. The Quechua word ''chaqu'' meaning "hunting land" comes probably from the rich variety of animal life present throughout the entire region. Geography The Gran Chaco is about 647,500 km² (250,000 sq mi) in size, though estimates differ. It is located west of the Paraguay River and east of the Andes, and is mostly an alluvial sedimentary plain shared among Paraguay, Bolivia, and Argentina. It stretches from about 17 to 33°S latitude and between 65 and 60°W longitude, though estimate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Sciences
Natural science is one of the branches of science concerned with the description, understanding and prediction of natural phenomena, based on empirical evidence from observation and experimentation. Mechanisms such as peer review and repeatability of findings are used to try to ensure the validity of scientific advances. Natural science can be divided into two main branches: life science and physical science. Life science is alternatively known as biology, and physical science is subdivided into branches: physics, chemistry, earth science, and astronomy. These branches of natural science may be further divided into more specialized branches (also known as fields). As empirical sciences, natural sciences use tools from the formal sciences, such as mathematics and logic, converting information about nature into measurements which can be explained as clear statements of the " laws of nature". Modern natural science succeeded more classical approaches to natural philosophy, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pilcomayo River
Pilcomayo (in Hispanicized spelling) (Quechua Pillkumayu or Pillku Mayu, ''pillku'' red, ''mayu'' river, "red river", Guarani Ysyry Araguay ) is a river in central South America. At long, it is the longest western tributary of the Paraguay River. Its drainage basin is in area, and its mean discharge is . Along its course, the Pilcomayo silts up and splits into two main branches, North and South. After some distance, these branches rejoin to form the Lower Pilcomayo. The Pilcomayo rises in the foothills of the Andes mountain range in the Oruro Department in Bolivia, east of Lake Poopó. The Jach'a Juqhu River is considered the origin of the Pilcomayo. Upstream the Jach'a Juqhu River successively receives the names Aguas Calientes and Kachi Mayu. From the confluence with the Chillawa ''(Chillahua)'', the river is called Pilcomayo. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal High School (Edinburgh)
The Royal High School (RHS) of Edinburgh is a co-educational school administered by the City of Edinburgh Council. The school was founded in 1128 and is one of the oldest schools in Scotland. It serves 1,200 pupils drawn from four feeder primaries in the north-west of the city: Blackhall primary school, Clermiston primary school, Cramond and Davidson's Mains. The school's profile has given it a flagship role in education, piloting such experiments as the introduction of the Certificate of Secondary Education, the provision of setting in English and mathematics, and the curricular integration of European Studies and the International Baccalaureate. The Royal High School was last inspected by HMIE in April 2007. The rector is Pauline Walker who replaced Jane Frith, the first woman to head the school. History The Royal High School is, by one reckoning, the 18th- oldest school in the world, with a history of almost 900 years. Historians associate its birth with the flowering o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcutta
Kolkata (, or , ; also known as Calcutta , List of renamed places in India#West Bengal, the official name until 2001) is the Capital city, capital of the Indian States and union territories of India, state of West Bengal, on the eastern bank of the Hooghly River west of the border with Bangladesh. It is the primary business, commercial, and financial hub of East India, Eastern India and the main port of communication for North-East India. According to the 2011 Indian census, Kolkata is the List of cities in India by population, seventh-most populous city in India, with a population of 45 lakh (4.5 million) residents within the city limits, and a population of over 1.41 crore (14.1 million) residents in the Kolkata metropolitan area, Kolkata Metropolitan Area. It is the List of metropolitan areas in India, third-most populous metropolitan area in India. In 2021, the Kolkata metropolitan area crossed 1.5 crore (15 million) registered voters. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hooghly College
Hooghly or Hughli can refer to: Places *Hooghly, West Bengal, colonial port town now part of Hugli-Chinsura *Hooghly district, established 1795, containing the above town *Hooghly (Lok Sabha constituency) *Hooghly River Ships * ''Hooghly'' (1819 ship), a British merchant ship, launched in 1819 *Hooghly-class fuel barge The ''Hooghly''-class of fuel barge is a series of service watercraft being built by Hooghly Dock & Port Engineers Ltd, Kolkata (HDPEL) for the Indian Navy The Indian Navy is the maritime branch of the Indian Armed Forces. The President ..., watercraft of the Indian Navy * HMIS ''Hooghly'' (K330), an Indian pilot vessel and former Canadian frigate {{Disambig, geo, ship ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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