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115 



DEO 



nelle ; Lith. durnas, foolish as 

 in intoxication), a weed among 

 corn, supposed to induce intoxic- 

 ation ; the grass Lolium temul- 

 entum, said to be poisonous, but 

 erroneously. 



dartos, n., dart'-tis (Gr. dartos, 

 the fleshy coat covering the 

 testes from d&ro, I nay), a thin 

 layer of loose, reddish, musculo- 

 cutaneous tissue, forming the 

 tunic of the scrotum : dartoid, 

 a., ddrt'-oyd, resembling the 

 dartos. 



Datiscacese, n. plu., dat'-is-kd'-se-e 

 (origin unknown), the Datisca 

 family, an Order of herbaceous 

 plants : Datisca, n., dat-is-a, a 

 genus of hardy herbaceous plants, 

 some of which are bitter : Datisca 

 cannabina, kan'-d-bln'o, (Gr. 

 Icannabis, L. canndbis, the hemp), 

 a species said to have purgative 

 qualities. 



Datura, n., dat-ur'a (a corruption 

 of Arabic name tatorah), a genus 

 of plants, Ord. Solanacese, Sub- 

 ord. Atropeae, many of the 

 species of which are powerfully 

 narcotic : Datura stramonium, 

 stra-m6n''i'Um(L. strdmen, straw, 

 strammis, of straw, so called 

 from its fibrous roots), the thorn 

 apple, so called from its prickly 

 capsule ; the leaves and seeds 

 are used as narcotics, and in the 

 form of powder and tincture as 

 anodynes and antispasmodics, 

 the leaves are smoked for asthma : 

 D. Tatula, tdf-ul-a (1ST. American 

 word) ; D. Metel, met'81 (from 

 Asia) ; D. sanguinea, sang- 

 givm'8-a(L. sangmn$us, of blood 

 from sanguis, blood), the red 

 thorn apple ; D. ferox, fer'-oks 

 (L.ferox, wild, fierce) : D. fastu- 

 Q&&,fdst r -U'6 i z f 'a (new L. fastuosus, 

 pert, to pride from fastus, 

 arrogance, pride), are species 

 which have properties similar to 

 D. stramonium : D. alba, alb'-fi, 

 (L. albtis, white), the white- 

 flowered Datura, whose leaves 



and seeds are used in India as 

 sedative and narcotic. 



Daucus, n., ddwk'us (Gr. daukon, 

 a kind of wild carrot), a genus of 

 plants, Ord. Umbelliferse : Dauc- 

 us carota, kar-ot'-a (mid. L. 

 carota, a carrot), a species pro- 

 ducing the esculent root, the 

 common carrot ; from this and 

 other species is made the Ajowan 

 or Omam, a condiment of India. 



Davailia, n.,ddv-al'li-a (in honour 

 of Davall, a Swiss botanist), a 

 genus of very beautiful ferns : 

 Davailia Canariensis, kan-ar'-l- 

 ens'-is (new L. Canariensis, of or 

 from the Canary Islands), a 

 beautiful species of fern, whose 

 root-stock, covered with coarse 

 brown hair, very much resembles 

 a hare's foot, hence the name 

 ' hare's-foot ' fern. 



decandrous, a., dek-dnd f -rus (Gr. 

 deka, ten ; aner, a male, andros, 

 of a male), in bot., applied to a 

 flower that has ten stamens. 



decapoda, n. plu., dek-ap'-od-a 

 (Gr. d%ka, ten ; podes, feet), a 

 section of the Crustacese which 

 have ten ambulatory feet; the 

 family of cuttle-fishes, having ten 

 arms or cephalic processes. 



deciduous, a., de-sid'-ii-us (L. de- 

 ciduus, that falls down or off 

 from de, down ; cado, I fall), not 

 perennial or permanent ; applied 

 to parts which fall off or are 

 shed during the life of the animal ; 

 in bot. , falling off after performing 

 its functions for a limited time ; 

 applied to trees which lose their 

 leaves annually. 



declinate, a., dek'lm-dt (L. dec- 

 lino, I turn aside, 1 bend from 

 de, down; clino, I lean), in bot., 

 directed downwards from its 

 base ; bent downwards or on 

 one side. 



decoction, n., de-kdk'-sTitin (L. 

 decoctus, a boiling down from 

 de, down ; coctus, boiled or baked), 

 the extraction of the virtues of 

 any substance by boiling it in 



