HOUND'S-TONGUE 



171 



HUNTER'S SCREW 



A dog used for hunting, as stag-hound, fox- 

 hound, deer-hound, &c. 

 Hound's-tongue=Cynoglossum, q.v. 

 Hour, (our). [Heure, the French word.] -^ 

 of a mean solar day: divided in to 60 minutes. 

 v. Time. H. angle: the angular distance of 

 a given star, &c., from the meridian : may be 

 expressed in hours, minutes, &c. H . circle : 

 a portion of the apparatus belonging to an 

 equatorial telescope, which indicates the 

 right ascension of any given object. 

 House, (hous). [Efts, the A.-S. word.] H. 

 fa'es:=Musca. H. f/ec&o^Lacerto gecko. H. 

 leek = Sempervivum tectorum. H. leeks= 

 Crassulaceas, q.v. H. lizard = Chichack, a 

 Borneon lizard. H. mariin=Chelidon urbica. 

 H. sprrow=Pyrgita domestica =Passer do- 

 mesticus. 

 House builder moth = Oiketicus Sandersii : 



builds a pensile nest. 

 Hoyite, (ho'vit). [Mr. Hove.] A soft friable 



mineral, chiefly bicarbonate of lead. 

 Howitzer, (how'it-zer). [Haubitze, the Ger- 

 man word.] A 

 gun used for the 

 discharge of shells 

 of large size at 

 short ranges. 

 Howlers = Howl- 

 ing-monkeys, q.v. 

 Howling-monkeys 

 =Mycetes : slow, Howitzer, 



clumsy, arboreal animals, with long prehen- 

 sile tails; belong to Cebidje, q.v. ; correspond 

 to the baboons of the Old World. 

 Howlite, (how'lit). A mineral, chiefly hydrated 



borate of lime. 



Hows, (howz). A Yorkshire term for tximuli. 

 Howson's barometer. A column of mercury 

 in a glass tube, with central glass tube: a 

 modified and very sensitive form of the com- 

 mon barometer. 

 Hoy, (hoy). [lieu, the French word.] A 



small coasting vessel. 

 Huascolite, ( ho-as'ko-lit). [Huasco.] A 



mineral, chiefly sulphide of lead and zinc. 

 Hubnerite, (hub'ner-it). A mineral, chiefly 

 tungstate of manganese. 

 Hue, (hu). [Hui, the A.-S. word.] Gradation 

 of colour, cf. Tint. 



Huggins. [Dr. Huggins.] H.'s granules, v. 

 Granules. 



Hugoniaceae, (hu-go-ni-a'se-e). [Hugonia, typ. 

 gen.]=0xalidace8e, q.v. 



Huguier's canal. In the temporal bone, for 

 the passage of the chorda tympani nerve to 

 pass through; named after the discoverer. 

 Human, (hu'man). [Humanus, the Latin 

 word.] Relating to mankind. H. ear : can 

 distinguish sounds caused by vibrations of 

 between 12 and 38,000 per second; and so has 

 a range of about 11 octaves, v. Sound. H. 

 voice: produced by the action of the vocal 

 chords, q.v. H. species: the varieties of 

 men. v. Man. H. remains: found in caves 

 of Post Pliocene rocks; usually iu limestone 

 districts. 



Humble-bees, (hum'bl). [Ger. hummel, hum- 

 ming.]=Bombus: wild social bees; insects 



belonging to Hymenoptera ; also called 

 Dumble-bees. 

 Humboldtilite, (hum-bold'ti-lit). [Humboldt; 



Gk. lithos, stone.]=Melilite, q.v. 

 Humboldtine, (hum'bold-tin). A mineral, 

 chiefly hydrated oxalate of iron. 

 Humboldtite, (hum'bold-tit). [Huraboldt.] 

 =Datalite: a mineral, chiefly oxalate of 

 lime. 



Humerus, (hu'me-rus). [The Latin word.] 

 The bone of the upper arm, in vertebrate 

 animals; not developed in fishes. 

 Humio acid, (hu'mik). [L. humus, the earth.] 

 =C 2 oH 12 O 6 : one of the constituents of the 

 mould of decaying wood. 

 Humidity, (hu-mid'i-ti). [L. humidus, moist.] 

 Saturation with moisture, so that part of it 

 is deposited on bodies which come in con tact. 

 Humiriacese, (hd-nu-ri-a'se-e). [From the 

 native name in Guiana. ]=Humiriads: tropi- 

 cal balsamic trees and shrubs with leathery 

 leaves, belonging to Ericales. 

 Humite, (hu'mlt). [Humus, q.v.] A trans- 

 lucent vitreous mineral, chiefly silicate of 

 iron and magnesium. 



Humming-birds, (hum'ming). [Named from 

 the noise they make.] 

 = Trochilidae, q.v.: 

 birds belonging to 

 Insessores, of which 

 there are several 

 genera ; Phsethornis, 

 Oreotrochilus, Gry- 

 pus, Thalurania, &c. 

 Humming- bird moth 

 =Macroglossa Stella- Humming-bird, 

 tarurn, resembles humming-bird. 



Humopinic acid=Humopicacid: an amorphous 

 acid substance obtained from narcotine. 



Humorum=Mare Humorum: one of the plains 

 on the surface of the moon, formerly sup- 

 posed to be a sea. 



Humours, (htt'morz). [L. humor, moisture.] 

 Watery liquids within the eye, which keep 

 it in shape. Aqueous H. fills the cornea of 

 the eye. Vitreous H. fills the sclerotic of 

 the eye. 



Humulua, (hu'mu-lus). [L. humus, rich soil.] 

 =Hop: a twining herb, belonging to Caniia- 

 binaceae. 



Humus, (hu'mus). [L. humus, the earth.]= 

 Ulmus=Ulmin = Gein : a dark colouring 

 matter in leaves ; the mould of decaying 

 wood. 



Hundred. H. fo#s=Scolopendra: a centipede. 

 Il.-u-eiyht, 112 Ibs. v. Weights. 



Hungarian, (hung-ga'ri-an)=Magyar : a Euro- 

 pean people. H. balsam, from Pinus pumilio. 

 H. wi?ie-oi{=CEnanthic ether. 



Hunter's classification of animals : Mam- 

 malia and birds: having a heart with four 

 cavities. Eeptilia and Amphibia: having a 

 heart with three cavities. Fishes and Mol- 

 luscs (pars.): having a heart with two cavities. 

 Articulated animals: having a heart with 

 one cavity. Med.usse, having the heart and 

 stomach identical. 



Hunter's screw. A form of the differential 

 screw, q.v. 



