HJERNESITE 



156 



HALOGENS 



Greek word.] A flow of Wood, as from a 

 wound. 



Hsernesite, ( hcr'ne-sit ). A mineral of the 

 Phamacolite group. 



Hag, (hag). Myxine: a fish, belonging to Cy- 

 clostoma. Glutinous H.= Myxine glutinosa: 

 covered with secreted mucous. 



Hags, (hagz). [Plural of Hag.]=Myxinidre : 

 eel-like fishes, with sucker-like mouths, 

 usually found in larger fishes. 



Haidingerite, ( ha-din'jer-it ). 1. An ore of 

 calcium: chiefly hydrated arsenate of calcium. 

 2 Berthierite: sulphide of iron and stibium. 



Hail, (hal). [Hagal, the A.-S. word.] Small 

 pieces of ice: frozen rain. 



Haimean bodies, (ha'me-an). Large refractile 

 cells in the nervous system of Actinia. 



Hair, ( hiir ). [ Har, the A.-S. word. ]=Tri- 

 chome : a tubular, scaly modification of the 

 epidermis common to all mammalia except. 

 whales and porpoise : in hedgehogs and por- 

 cupines, become spines. Hairs are peculiar 

 to warm-blooded vertebrates, and in the 

 warmest blooded, birds, they become feathers: 

 //. bell Campanula rotundifolia. H. rtag= 

 Plocamium. H. grass= Aira : a plant, be- 

 longing to Graminaceoc. H. hygrometer^ 

 Saussure's hygrometer. H. wioss=Polytri- 

 ohum. H. salt: eflJorescence of sulphate 

 of magnesium: a silky fibrous variety of Ep- 

 somite. H. taiJ=Trichiurus: a fish having a 

 hair-like tail. H. worms Goriliiota. 



Hairs, (harz). [Plural of Hair, q.v.]=Tri- 

 chomes : horny modifications of the epider- 

 mis, found in all mammalia, v. Hair. 



Haje=Coluber haje : a serpent, belonging to 

 Colubridne. 



Hake, (hak). [O. hfcht, pike.]=Merluciua= 

 Gadus roerlucius: a 

 fish, belonging to 

 (JadidtB. H's-dame 

 =.Phycis furcatus. 



Halcyon, (hal'si-on). 

 (Alcyon, the Latin Hake. 



name.]=King-fisher : a bird, belonging to 

 Insessores. 



Halcyonidse, ( hal-si-on'i-de ). [Halcyon, q.v.: 

 Gk. eidos, form.]=Halcynoids. Kingfishers: 

 a family of birds belonging to Fissirostres. 



Halcyonium, (hal-si-o'ni-um). A sub-division 

 of Zoophyta. 



Halcyornis, (hal-si-or'nis). [Halcyon, king- 

 fisher; Gk, ornis, bird.] A bird, known by 

 fossil remains in London clay. 



Halo's apparatus. For measuring the force of 

 ascending sap in plants. 



Halesia, (hfi-16'si-a). [Dr. Hales.] A plant, 

 the type of Halesiaceac. H. tetraptera: snow- 

 drop tree. 



Halesiacese, ( hu-le-si-a'se-e ). [ Halesia, q.v.] 

 =Styracaceae, q.v. 



Half apes, include Cheirogaleus, Galago, Tar- 

 sius. 



Half beak=HeiniraTnplms: a sea pike, which 

 has the lower jaw longer than the upper. 



Half breadth plan of a ship : the horizontal 

 plan, showing one-half of the ship. 



Haliseetus, (hal-i-e'tus). [Gk. Halios, marine: 

 aetos, eagle.) A bird of prey, belonging to 



Falconidae. H. leucocephalus = Sea eagle. 

 H. maei= Fisher eagle. 



Halibut, (hal'i-but). [Heilbut, the German 

 name. ]=Pleuronectes 

 hippoglossus : a largo 

 flounder fish, weigh- 

 ing 4 or 5 cwt. 



Halicore, (hal'i-kor). 

 [Gk. hallos, marine; Halibut 



koure, damsel.]=Dugong: a cetacean animal 

 belonging to Manatidse. 



Halidracon, (hal-id'ra-kon). [Gk. halios, 

 marine; drakon, serpent. ]=Plesiosaurus, q.v. 



Halimodendrum, (hal-i-m6-den'drum). [Gk. 

 halimos, sea; dendron, tree.]=Salt-tree : a 

 plant belonging to Fabacese. 



Haliotidse, (hal-i-6'ti-de). [Haliotis, ?.?'.]= 

 Ear-shells : a family of molluscous animals, 

 belonging to Gasteropoda. 



Haliotis, (ha-li-6'tis). [Gk. hals, sea; out, 

 ear. ]= Sea-ear: a molluscous animal, named 

 from the shape of the shell ; the type of 

 Haliotidse. 



Halite, (hi'lit). [Gk. halt, salt: lithos, stone.] 

 Common salt, when in the form of rock-salt: 

 a mineral, chiefly chloride of sodium, also 

 called rock-salt, muriate of soda, &c. If. 

 group of minerals : Halite, nitre, epsomite, 

 boracite, &c. 



Halitherium, (hal-i-the'ri-um). [Gk. halios, 

 marine; therion, beast.] A cetacean animal, 

 resembling the dugong, known by fossil re- 

 mains, found in Tertiary, v. Sirenia. 



Halleriace, (hal-l5r-i-a'se-6)=Scrophulari- 

 aceao, q.v. 



Halley, (hal'li). [Halley, the astronomer.] 

 1. A crater in the moon. 2. H.'s comet; 

 returns every 76 years; last appearance 1835: 

 next expected in 1911. 3. 11. method of 

 observing transit; observing the duration 

 of the transit at two different stations; the 

 sun's distance is determined by the difference 

 of these times. 



Hallier's theory of disease, In typhus, 

 measles, vaccinia, Ac.; that micrococci are 

 present, and when cultivated become fungi; 

 it is not certain which of the two, disease or 

 fungus, is cause and which effect. 



Hallite, (hal'lit). [Gk. hals, salt.]=Aluminite, 

 q.v. 



Halloylite, (hal'loi-lit). [Mr. Hally ; Gk. 

 litkos, stone. ]=Halloysite: a mineral, chiefly 

 hydrated silicate of alumina, magnesium, 

 and calcium. 



Hallux, (hal'luks). [L. hallrx, great toe.]= 

 Great toe: in man, but slightly adductive 

 and abdnctive ; in apes and monkeys freely 

 movable ; in Insectivora has a claw ; re- 

 sembles the other toes in Cheiroptera and 

 Carnivora. 



Halmaturus, (hal-ma-tQ'rus). 1. Used for 

 kangaroos generally. 2. A small species of 

 kangaroo. 



Halo, (hii'lfl). [The French word.] A lumi- 

 nous circle; especially a ring of light round 

 the sun or the moon. 



Halogens, (hal'o-jenz). [Ok. Iw.ls, sea-salt; 

 pcnnao, I produce.] = Bromine, chlorine, 

 fluorine, and iodine; monad electro-negative 



