Ýëëèñ, Äæîí (Ellis; 1710—1776) — àíãëèéñêèé åñòåñòâîèñïûòàòåëü; çàíèìàëñÿ êîììåð÷åñêèìè äåëàìè, íî â òî æå âðåìÿ óñåðäíî èçó÷àë íèçøèõ ìîðñêèõ æèâîòíûõ. Ýëëèñ îäèí èç ïåðâûõ ó÷åíûõ, óñòàíîâèâøèõ æèâîòíóþ ïðèðîäó êîðàëëîâûõ è íåêîòîðûõ äðóãèõ êèøå÷íîïîëîñòíûõ è ìøàíîê, êîòîðûõ îí â áîëüøèíñòâå ñëó÷àåâ ñîáèðàë ñàì íà áåðåãàõ Àíãëèè. Ýëëèñ âïåðâûå îïèñàë áîëüøîå ÷èñëî íàéäåííûõ èì îðãàíèçìîâ è ïåðâûé ïûòàëñÿ óñòàíîâèòü ñèñòåìàòèêó "Êîðàëëîâ"; êðîìå ýòîãî, Ýëëèñ, ïîëüçóÿñü äëÿ ñâîèõ èññëåäîâàíèé ìèêðîñêîïîì, ñïîñîáñòâîâàë óëó÷øåíèþ ìèêðîñêîïè÷åñêîå òåõíèêè. Áóäó÷è ïîñëàí â Öåíòðàëüíóþ Àìåðèêó â êà÷åñòâå êîðîëåâñêîãî àãåíòà, Ýëëèñ ìíîãî ñïîñîáñòâîâàë ââîçó ïîëåçíûõ òðîïè÷åñêèõ ðàñòåíèé è èõ ïðîèçâåäåíèé â Àíãëèþ. Ñ Ëèííååì Ýëëèñ ñîñòîÿë â æèâîé ïåðåïèñêå, èìåâøåé, ãëàâíûì îáðàçîì, öåëüþ âûÿñíèòü ïðèðîäó íèçøèõ ðàñòèòåëüíûõ è æèâîòíûõ ôîðì. Èç ÷èñëà íàó÷íûõ òðóäîâ Ýëëèñ íàçîâåì ñëåäóþùèå: "An essay towards a natural history of the Corallines etc." (Ë., 1755, ñ 39 òàáë.); "An account of the Sea-Pen, or Pennafcula phosphorea L. etc." ("Phis. Trans.", 1763); "On the nature and formation of Sponges" ("Phil. Trans.", 1765); "On the animal nature of the genus of Zoophytes called Corallina" ("Phil. Trans.", 1767); "Letter to Dr. Linnaeus on the animal nature of the genus of Zoophytes called Corallina" (Ë., 1768); "Observations on a particular manner of encrease in the animalcula of vegetable infusions etc." ("Phil. Trans.", 1769); "On the nature of the Gorgonia etc." ("Phil. Trans.", 1776); "The natural history of many curious and uncommon Zoophytes etc. " (âìåñòå ñ Çîëåíäåðîì, èçä. äî÷åðüþ Ýëëèñà, Ë., 1786, c 68 òàáë.) è ìí. äð.
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