HYPOGLOSSAL 



178 



ICE 



into plutonic roc/.-.s ami crystalline schists: 

 never above fossiliferous or volcanic rocks. 



Hypoglossal (hi-po-glos'sal). [Hypo and Glos- 

 sal, q.v.] Below the tongue. H. nerve=The 

 ninth nerve: serving the tongue and larynx. 



Hypogynous, (hi-poj'i-nus). [Gk. hypo, under; 

 tjyne, female.] Used of flowers, when the 

 receptacle is raised above the stamen, and 

 the stamens are quite free. 



Hyponitric acid, (hi-po-nftrik). [Hypo and 

 Nitric, 3.i>.]=N2O4=:Nitric peroxide. 



Hyponome, (hl-pon'o-me). [Gk, hyponomous, 

 underground.] An animal belonging to 

 Echinodermata: found in Australia, and re- 

 presenting the otherwise extinct Cystoidea. 



Hypophosphorous acid . PH3O2=Hydrie hy- 

 pophosphite: a syrupy liquid. 



Hypophysis, (hi-pofi-sis). [Gk. hypo, below; 

 phi/sos, growth.] A cell which afterwards 

 becomes the root, as in Angiosperms. 



Hypostome, (hi'pos-tdm). [Gk. hypo, under; 

 stom.fi, mouth.] = Lip-plate = Labrum: the 

 plate in front of mouth, as in trilobites. 



Hyposulphuric acid, (hl-po-sul-fu'rik). (Hypo 

 and Sulphuric, q.v.] =. H 2 S 2 O 6 = Dithionic 

 acid=Dihydricdithionate: v. Sulphuric acid. 



Hyposulphurous acid, (hi-po-sul-fu'riis). [Hypo 

 and Sulphurous, q.v.] I^SoO-^Dithionous 

 acid. v. Sulphuric acid. 



Hypotamidae, ( hi-pot-am'i-de ). An extinct 

 family of Ungulates. 



Hypothecium, (hi-po-the'si-tim). [Gk. hypn, 

 under; theke, cell] The mass of fibres be- 

 low the sub-hymenial layer of some lichens. 



Hypothenuse, (hi-pot'5-nus). [Gk. hypo, be- 

 low; teinein, to stretch.] 

 The side of a right angled 

 triangle which is opposite 

 to the right angle. 



Hypothesis, (hi-poth'S-sis). 

 [The Greek word. ^Suppo- 

 sition: an assumption, made 

 as the basis of a discussion. 



Hypotrochoid, ( hi-po-trok'- 

 oid). [Gk. kypo, under; AK Hypotenuse. 



trochos, wheel.] The curve traced by a point 

 in a circle, but not in the circumference, as 

 it rolls on the concave arc of another circle. 

 cf. Hypocycloid. 



Hypovitellians, ( hi-po-vi-tel'li-anz ) Hypo- 

 cotyledones, q.v. 



Hypoxanthine, (Iri-poks-an'thin) = C 5 H 4 N 4 0. 

 v. Xanthine. 



Hypoxidacese, (hi-poks-i-da'se-e). [Hypoxis, 

 the typical genus.]=Hypoxids: tropical her- 

 baceous plants, with tuberous roots and 

 linear leaves, belonging to Narcissales. 



Hypoxyla, ( hl-poks-i'la ). [Gk. hypo, less; 

 xyle, wood.] A name suggested for tha 

 fungi that resemble lichens. 



Hypsilophodon, (hip-si-lof'o-don). [Gk. hyp- 

 sos, height; lophos, hill : odous, tooth.] An 

 animal belonging to Diuosaurus, but re- 

 sembling the Iguauodon. 



Hypsiprymnus, (hip-si-prim'nus). [Gk. hyp- 

 sos, height; pri/mnos, extremity.] Kanga- 

 roo-rat: a small nocturnal kangaroo-like 

 animal. 



Hypsodon, (hip'so-don). [Gk. hypos, height; 

 odous. tooth.] A fish, known by fossil re- 

 mains in Chalk and London clay rocks. 



Hypsometer, ( hip-som'e-ter ). [Gk. tiypog, 

 height; Meter, q.v.] An instrument for tha 

 measurement of heights by hypsoraetry. 



Hypsometry, ( hip-som'e-tri ). [Gk. hypsox, 

 height; Meter, q.v.] The measurement of 

 heights, by the determination of the boiling 

 point of water, or by other means. 



Hyracoidea, ( hl-ra-koi'de-a ). [Gk. Jiyrax, 

 shrew; eidos, form.] = Hyrax: small grega- 

 rious animals, forming a primary division of 

 Mammalia. 



Hyracotherium, (hl-ra-ko-tlu/ri-um). [Hyrax, 

 q.v. ; Gk. therion, beast.] A hog-like animal, 

 known by fossil remains found in Lower 

 Eocene, and London clay. 



Hyrax, (hi'raks). [The Greek name.]=Day- 

 man : a small tail-less herbivorous quad- 

 ruped, the type of Hyracoidea. H. 

 I =Cape badger. 



I. 



lanthe, (i-an'the). [Classical.] No. 9S of 



the Minor Planets. 



lapetus. (I-ap'e-tus). [Classical.] A star, 

 latric, (i-at'rik). [Gk. iatnkos, healing.] 



Relating to medicine, or medical men. 

 latro-chemist, (i-a-tro-kem'ist). [latric, q.v.] 



A physician who is also a chemist. 

 Iberis, (i-be'ris). [Iberia, in Spain. ]=Candy 



tuft: an herb belonging to Brassicacese. 

 Iberite, (i'ber-it). 1. A mineral: a variety of 



lolite. 2=Gigantolite. 

 Iberian, (i-be'ri-an). [Iberia, in Spain.] 7. 



floral region : characterised by humidity and 



evergreen plants. 

 Ibex, (i'beks). [The Latin name.]=Capra 



ibex: an animal of the goat kind; found in 



the Alps and other mountainous parts of 



Europe. 



Ibis, (I'bis). [The Latin name.] A bird, re- 

 markable for beauti- 

 fulcolours and long 

 bill, found in warm 

 countries ; belongs 

 to Grallatores. /. 

 religiosa : sacred 

 Ibis. v. Tantalinae. 



Ibla, (ib'la). Small 

 crustacean animal, 

 belonging to Cir- 

 rhopoda; the mala 

 is an internal para- 

 site on female. 



Ice, (is). (Is, the 

 A.-S. word.]=Fro- 

 zen water: a mine- 

 ral, which crystallises in hexagonal stellate 



