HALOID 



157 



HAPLACANTHTTS 



chemical elements, combining readily with 

 other, electro-positive, substances; and form- 

 ing with the metals compounds resembling 

 sea-salt. 



Haloid, (haloid). [Gk. hah, salt; eidos, form.] 

 Resembling salt. H. ethers: compounds of 

 organic radicles, with halogens. H. group 

 of minerals: calcite, halite, fluorite, gypsum, 

 &c. H. salts: combinations of metals with 

 hydrogen acids, resembling common salt. v. 

 Halogens, v. Salts. 



Haloragaceae, (hal-6-ra-gu'se-g). [Haloraeis. ] 

 =Hippurids=Mare'stail, &c. ; aquatic herbs, 

 with small axillary flowers, belonging to 

 Myrtales. 



Halotrichite, (halo-tri-kit). [Gk. hals, sea; 

 thrix, hair.] 1. A silky fibrous mineral, 

 chiefly hydrated sulphate of iron and alu- 

 minum; also called Halotrichine. 2.=Alu- 

 nogen ; hydrated sulphate of aluminum. 



Halteres, (hal-te'rez). [Gk. Jialteres, weights.] 

 Second wings of Diptera, also called balancers; 

 modified into small nobbed stalks. 



Haltica, (hal'ti-ka). [Gk. haltikos : able to 

 leap. ]=Tur nip flea, garden flea, &c. ; leaping 

 insects, belonging to Coleoptera. 



Halticocoridae, (hal-ti-k6-kor'i-d6). [Gk. halti- 

 xros.able to leap: koris, bug.]=Jumping-bugs; 

 a family of insects, belonging to Heterop- 

 tera. 



Halysichnus, (hal-i-sik'nus). [Gk. Jtalysis, 

 chain; ichnos, track.] A worm-like animal 

 known only by its fossil track, belonging 

 to Annelidan Lithichnozoa. v. Lithich- 

 nozoa. 



Ealysites, (hal-i-si'tSz). [Gk. halysis, chain.] 

 Corals, plentiful in Upper 

 Silurian. H. catenularius 

 =Chain coral. 



Hamadryas,(ham-a'dri-as). 

 [L. hamadryas, wood- 

 nymph.] 1. A hooded 

 serpent with poison fangs, 

 found in hollow trees. 

 2. A plant belonging to 

 Ran unculacete. 



Hamal a Arietis : the 

 chief star in the constel- 

 lation Aries. 



Hamamelidaceae, ( ham - a - mel - i - da 'se - e ). 

 [Hamamelis, q.v.] = Witch -hazels : shrubs 

 and trees, with deciduous leaves and axil- 

 lary flowers, belonging to Umbellales. Fruit 

 and flower grow at same time. 



Hamamelis, ( ham-a-melis ). [Gk. hama, 

 with; melon, fruit.] = Witch-hazel : a plant, 

 the type of Hamarnelidacese, named from 

 fruit and flowers coming in same time of 



Halysites. 



= Hydrofluocerite: a mineral, 

 chiefly carbonate of lanthanum and 

 cerium. 



Hamburgh white = Barytes : used as a pig- 

 ment. 



Hamilton's triangle. [Sir W. Hamilton.] 

 v. Quaternions. 



Hamipes, (ha'mi-pes. [L. hamus, hook; pes, 

 foot.] A crustacean animal known only by 

 fossil tracks, v, Lithichnozoa. 



Hamites, (ha-nu'tez). [L. hamus, hook.] 



Cephalopods, having a 



hooked shell, many spe- 

 cies of which are found 



in Chalk rocks. 

 Hammer, (ham'mer). i 



[Hamer, the A.-S. word.] 



Power H., a hammer' 



moved by machinery, 



by means of water, 



steam, &c. Steam H., 



a hammer worked by 



steam: usually of very 



large size, consists essen- 

 tially of a mass of steel, 



sliding in a vertical 



frame, and connected 



directly with the piston 



rod of a steam engine. 

 Hammer-beam. A beam reaching only partially 



across an opening. 

 Hammer - engine. A 



variety of the direct- 

 acting vertical steam- 

 engine : named from 



the supporting frame 



resembling that of a 



steam-hammer. 

 Hammer-headed shark 



= Zygaena malleus : 



has eye-balls at the 



end of projections a. Hammer-beam. 



from the side of the head. 

 Hamster, (ham'ster). [The German name.]= 



Cric33tus=Mu8 cri- 



cetus: a rat -like \'J\ ^^^^\l\ 



animal belonging 



to Rodentia; lias, 



large cheek po uches. 

 //. of Canada = 

 Canada pouched rat. 

 Hamular, ( hu'mu- 

 lar). [L. hamus, 

 hook.] Hook-like. 



Hand, (hand). [The A.-S. word.] = Manus: 

 the extremity of the pectoral limb in man. 

 //. beast = Cheirotherium, q.v. H. tree = 

 Cheirostemon platanoides: the five anthers 

 resemble digits. 



Hanging-bird = Han g-nest = Baltimore oriole : 

 a bird which builds a 

 purse-shaped hanging 

 nest. The sexes are 

 alike, and coiispicu-, 

 ously coloured. 

 Hapale, ( hap'a-le ). 

 [Gk. hapalos, tender.] 

 =Jacchus: a monkey 

 belonging to Platyr- i? 

 hina. H. jacchus= ^ 

 Marmoset-monkey. 

 Hapalemur, (hap-al'- 

 e-mur). [Hapale and 

 Lemur, q.v.] An animal belonging to Lemu- 

 rinae; found only in Madagascar. 

 Hapalinse, ( hap-al'i-ne ). [Hapale, Q.v.] A 

 sub-family of Cebidse. 



Haplacanthus, (hap-la-kan'thus). [Gk. hap- 

 loos, simple ; akantha, spine. ] A plagio- 



ng-bird. 



