GYRATION 



155 



HEMORRHAGES 



Gyration, (jT-ra'shun). [Gk. gyros, circle.]= 

 Angular oscillation, v. Oscillation. Revo- 

 lution round a fixed centre. 



Gyrencephala, ( ji-ren-sef'a-la ). [Gk. gyros, 

 circle ; encephalon, brain. J =Quadrumana, 

 Cetacea, Carnivora, &c., of which fossil re- 

 mains are found only in Tertiary rocks. 

 Owen's term for a division of Mammalia; 

 including Quadrumana, the more common 

 quadrupeds, and whales. 



Gyrfalcon, ( jer-faw'kn ). [Gk. gyros, circle ; 

 Falcon, g.v.] A bird of prey, belonging to 

 Falconidse. 



Gyrinus, (ji-ri'nua). [L. gyrinus, tadpole.] 

 l.=Axolotl, q.v. 2. An insect; one of the 

 water beetles. 



Gyrodus, (ji-ro'dus). [Gk. gyros, circle: odous, 

 tooth.] A fish, known by fossil teeth, found 

 in Wealden, Oolite, &c. 



Gyrogonites, (jl-rog'6-mts). [Gk. gyros, round; 

 gonia, corner.] Fossil Characeae, named by 

 Lamarck on t-he supposition of their being 

 testaceous animals. 



Gyrolepis, (jl-rol'e-pis). [Gk. gyros, circle; 

 lepis, scale.] A ganoid fish, known only by 

 fossil scales found in the Lias. 



Gyrophora, ( ji-rofo-ra ). [Gk. gyros, circle; 

 pkcro, I bear.] A lichen, some species of 

 which are edible. 



Gyrophoric acid, (jT-rofor-ik). An acid ob- 

 tained from Gyrophora. 



H 



Habenaria, (ha-be-na'ri-a). [L. habena, thong.] 

 A genus of orchids ; named from shape of 

 spur. H. bifolia = Butterfly orchis. H. 

 viridis=Frog orchis. 



Hackberry, (hak'ber-ri). An American tree, 

 resembling the elm, with edible fruit. 



Hackly, (hak'li). [Dutch heM, comb.] 1. 

 Covered with fine points; rough. 2. Brittle; 

 easily broken. 



Haddock, ( had'dok ). [Hadog, the Welsh 

 name.]=Morrhua8eglefinus: a fish, belonging 

 to Gadidse. 



Haedi, (he'di).= and ij Aurigro: two stars in 

 the constellation Auriga. 



Haemal, ( he'mal ). [Gk. haima, blood.] Be- 

 longing to the circulating system. // flexure: 

 bending to wards the heart. H. s?/3tew=Blood 

 circulation, in all vertebrate animals. //. 

 fw6e=Ventral tube, containing heart, lungs, 

 alimentary system. 



Hsematein, (he'ma-tin). [Gk. haima, blood.]= 

 Ci 6 H 12 5 : a crystalline substance obtained 

 from Hsematoxylin. 



Haematin, (he'ma-tin). [Gk. Jiaima, blood.]= 

 Ci 6 H 12 O 6 =:H8ematosin=the colouring mat- 

 ter of blood. Amorphous, found only in verte- 

 brate animals. Also said to be of much more 

 complex constitution and not formed in blood , 

 but obtained from it by the action of acids. 



Haematite, (he'ma-tlt). [Haimatites, the Gk. 

 word.] Blood-stone. An ore of iron: one of 

 the iron group of minerals, crystallising in 

 cubes. 1. Hydrated ferric oxide=Brown 

 H.=2 Fe 2 3 .3H 2 O. 2. Ferric oxide=Red H. 

 =Fe 2 3 . 



Haematococcus, ( he-ma-to-kok'kus ). [Gk. 

 haima, blood ; Tcokkos, grain.] A plant, be- 

 longing to Algaj; sometimes red coloured. 



Haematocrya, (he-ma-tok'ri-a). [Gk. haima, 

 blood ; cryos, cold.]=Cold-blooded verte- 

 brates: inchides fishes, amphibia, and rep- 

 tiles, cf. Hsematothermal. 



Haematocryal, (he-ma-tok'ri-al). [Gk. haima, 

 blood ; cryos, cold.] Owen's term for cold- 

 blooded vertebrates ; those which have less 

 complex heart and breathing organs=:fishes, 

 amphibia, reptiles. 



Haematocrygtallin,(li3-ma-to-kris'tal-lin). [Gk. 

 haima, blood ; Crystalline, #.i;.]=HjEmoglo- 

 bin : a crystalline matter, obtained from 

 blood. 



Haematoidin, ( he-ma-to'i-din ). [Gk. Jiaima, 

 blood. ]=Ci4H 13^03: a crystalline substance 

 found in blood, probably=Bilirubin. 



Haematolin, ( he-mat'o-lin ). [ Gk. haima, 

 blood.] A substance obtained from Hserua- 

 tin, by the action of sTilpluiric acid. 



Haematopus, (he-ma-to'p>is).=Oyster catcher: 

 a bird, belonging to Grallatores, having a 

 fleshy tongue, and feet adapted to running; 

 found on sea shores. 



Hsematornis, ( he-ma-tor'nis ). [Gk. haima, 

 blood ; omis, bird.] A bird of prey, belong- 

 ing to Falconidse. 



Haematotherma, ( he-ma-to-ther'ma ). [ Gk. 

 haima, blood; thermos, hot.] = Warm- blooded 

 vertebrates=Mammalia and birds. 



Haematothermal, (hG-ma-to-ther'rnal). [Gk. 

 hoAma, blood ; thermos, hot.] Owen's term 

 for the division of vertebrate animals con- 

 taining mammalia and birds : animals with 

 four-chambered heart, spongy lungs, and hot 

 blood, cf. Hsematocryal. 



Haematoxylin, (hc-rna-toks'i-lin). [Gk. haima, 

 blood; xylon, wood.]=CigHi4Og: the crystal- 

 line colouring matter of logwood. 



H8ematoxylon,(he-ma-toks'i-lon). [Gk. liaima, 

 blood ; xylon, wood.] A plant, belonging to 

 Fabacese. H. Campeachianum='LogwQQd. 



Heemodoracese, ( he-mo-do-ra'se-e ). [ Hfemo- 

 dorum, 3.v.]=Blood roots: herbaceous plants 

 with sword-shaped leaves and red coloured 

 roots, belonging to Narcissales. 



Heemodorum, ( he-mo-do'rum ). [Gk. Jiaima, 

 blood ; doron, gift.] The typical genus of 

 Hsemodoracese. 



Haemoglobin, ( he-mo-glo'bin ). [ Gk. haima, 

 blood. ] = CrUorin = Hjematocrystallin : in 

 muscular tissue. A constituent of blood, 

 upon which the power to absorb oxygen 

 seems to depend. The quantity of H. in- 

 creases with age, and it is more abundant in 

 males than in females. 



Haemorrhage, (he'mor-aj). [HaimorrJiagic', the 



