GLOSSARY. 



81 



part homologous with another in a 

 series. 



Ho'rary (Lat. horn, an hour). Re- 

 lating to, or denoting an hour. 



Hori'zon (Gr. 6pi^w, huri'zo, I bound). 

 The line in the celestial hemisphere 

 which bounds. the view on the sur- 

 face of the earth. 



Horizon'tal (Horizon). Parallel to 

 the horizon. 



Hornblende (Germ, blenden, to daz- 

 zle). A mineral, generally of a black 

 or dark green colour, found fre- 

 quently in granitic and trappean 

 rocks. 



Ho'rologe (Gr. wpa, hora, an hour ; 

 \ey(a, lego, I describe). An in- 

 strument for indicating the hours 

 of the day. 



Horol'ogy (Gr. wpa, hora, an hour ; 

 Atyw, leyo, I tell.) The art of 

 constructing machines for indicat- 

 ing time. 



Horom'etry (Gr. wpa, hora, an hour ; 

 /jLfrpov, metron, a measure). The 

 art of measuring time by hours. 



Horse-power. The power of a horse, 

 estimated as equal to the raising of 

 33,000 pounds one foot high per 

 minute, used in calculating the 

 power of steam-engines. 



Horse-shoe Magnet. An artificial 

 magnet, in the form of a horse- 

 shoe. 



Horticul'ture (Lat. hortus, a garden ; 

 colo, I cultivate). The art of cul- 

 tivating gardens. 



Hortus Siccus (Lat. a dry garden). 

 A collection of dried plants. 



Hot Blast. A current of heated air 

 thrown into a furnace. 



Hu'mate (Lat. humus, the ground). 

 A compound of humic acid with a 

 base. 



Humecta'tion (Lat. humec'to, I 

 moisten). A making wet. 



Hu'meral (Lat. hu'merus, the shoul- 

 der). Belonging to the huraerns, 

 or upper part of the arm above the 

 elbow. 



Hu'merus (Lat. the shoulder). The 

 arm from the shoulder to the 

 elbow ; the bone of this part. 



Hu'mic (Humus). Belonging to hu- 

 mus ; applied to an acid produced 



from the decomposition of humus 

 by alkalies. 



Hii'moral (Lat. humor, moisture). 

 Belonging to humours or fluids : 

 in medicine, humoral pathology is 

 the doctrine which attributes dis- 

 eases to a disordered state of the 

 fluids of the body. 



Humour (Lat. humor, moisture). 

 Moisture ; in anatomy, applied to 

 certain parts of the eye which 

 abound in fluid. 



Hu'mus (Lat. soil). The common 

 vegetable mould or soil, consisting 

 of carbon, hydrogen, and oxygen, 

 arising from the decay of vegetable 

 matter. 



Hy'ades(Gr. vca, huo, I rain). A cluster 

 of five stars in the Bull's Head, 

 supposed by the ancients to bring 

 rain. 



H/aline (Gr. va\os, hu'alos, glass). 

 Like glass ; transparent. 



Hyaloid (Gr. va\os, hu'alos, glass ; 

 eiSos, eidos, form). Resembling 

 glass ; transparent. 



Hylbodonts (Gr. vpos, hu'bos, humped; 

 o5ovs, odous, a tooth). A family 

 of fossil shark-like fishes with 

 knobbed teeth. 



Hy'brid (Gr. vfipis, hubris, force or 

 injury). The offspring of two ani- 

 mals or plants of different varieties 

 or species ; in etymology, applied 

 to words compounded from different 

 languages. 



Hydat'id (Gr. vScap, hudor, water). 

 A transparent vesicle filled with 

 water; often applied to parasitic 

 animal growth found in the liver 

 and other organs. 



Hydrac'id (Hy'drogen ; Lat. acfidus, 

 acid). An acid containing hydro- 

 gen as one of its forming elements. 



Hy'dragogue (Gr. vSwp, hudor, water ; 

 ay <a, ago, I lead). Producing a 

 discharge of fluid ; applied to cer- 

 tain medicines. 



Hy'drate (Gr. u5p, hudor, water); 

 A compound body in which water 

 exists in chemical combination. 



Hydraulic (Gr. vSup, hudor, water; 

 av\os, aulos, a pipe). Relating to 

 the conveyance of water through 

 pipes. 



