HET 



196 



HEV 



to the parent form ; spontaneous 

 generation, in which living cells 

 are supposed to be produced by 

 inorganic matter. 



heterologous, a., &tt$rdjp&9 

 (Gr. heteros, another, different ; 

 logos, speech, appearance), in 

 anat. , applied to growths which, 

 originating in the development of 

 indifferent formative cells, end in 

 developing a tissue diverse from 

 the matrix, as cartilage in the 

 testicle, etc. ; a synonym of 

 ' heteroplastic. ' 



heteromerous, a., he't'-e'r-Sm'-Zr-us 

 (Gr. heteros, another, different ; 

 rrieros, a part, a portion), in bot., 

 applied to lichens where the 

 thallus appears stratified by the 

 crowding of the gonidia into one 

 layer, and the hyphse form two 

 layers ; in zool., applied to the 

 coleopterous insects which have 

 five joints in the tarsus of the 

 first and second pairs of legs, 

 and only four joints in the tarsus 

 of the third pair : Heteromerans, 

 n. plu., het'-er'tim'-er-anz (Gr. 

 meros, the upper part of the 

 thigh), coleopterous insects whose 

 legs have a different structure one 

 from another. 



lieteromorphic, a., het'-Zr-o-mtirf- 

 ik (Gr. heteros, another, different; 

 morphe, shape, form), differing 

 in form or shape ; in bot, , having 

 different forms of flowers as re- 

 gards stamens and pistils, these 

 being necessary for fertilization, 

 as in Primula : heteromorphism, 

 n., hZt'er-d'md'rf'izm, a deviation 

 from the natural form or struct- 

 ure: heteromorphous, a., hZt'er- 

 o-m6rf'US, having an irregular or 

 unusual form : heteromorphy, 

 n., h&'er-d-mdrf'i, deformity in 

 plants ; heteromorphism. 



Heterophagi, n. plu., het^r-df^a-ji 

 (Gr. heteros, another; phago, I 

 eat), those birds whose young are 

 born in a helpless condition, and 

 which require to be fed by the 

 parents for a longer or shorter 



period ; birds that are foster- 

 parents to young birds of a differ- 

 ent kind, as to the young of the 

 cuckoo. 



heterophyllous, a.. Ut'-er-o-fiVlus 

 (Gr. heteros, another; phullon, a 

 leaf), in bot., presenting two 

 different forms of leaves : hetero- 

 phylly, n., hMttr-frftftt, the 

 variation in the leaves of plants 

 in external form. 



heteroplastic, a., hZt'-er-d-plast'-ik 

 (Gr. heteros, another ; plastikos, 

 formed, fashioned from plasso 

 I form), in anat. , applied to those 

 growths which are unlike the 

 tissues from which they take 

 their rise ; syn. of ' heterologous, ' 

 which see. 



heterorhizal, a., hZt'-er-o-riz'-cil 

 (Gr. heteros, another, different ; 

 rhiza, a root), in bot., having 

 rootlets proceeding from various 

 points of a spore during germin- 

 ation ; rooting from no fixed 

 point. 



heterosporous, a., li < et'-er-d'Spor'>us 

 (Gr. heteros, another; spora, 

 spore, seed), in cryptogamic 

 plants, having both microspores 

 and macrospores on the same in- 

 dividual, as in Selaginella. 



heterotaxy, n., het'$r-d-taks'i (Gr. 

 heteros, another; taxis, arrange- 

 ment), in bot., the deviation of 

 organs from their ordinary posi- 

 tion. 



heterotropal, a., het^r-St-rdp-dl 

 (Gr. heteros, another, different; 

 tropos, a turn, manner from 

 trepo, I turn), in bot., lying 

 across ; applied to the embryo 

 of seeds when they lie in an 

 oblique position; applied to the 

 ovule when it is so attached to 

 the placenta that the hilum is 

 in the middle, and the foramen 

 and chalaza at opposite ends, thus 

 becoming transverse. 



Hevea, n., h6v&d (not ascer- 

 tained), a genus of plants, Ord. 

 Euphorbiacose : Hevea Brasili- 

 ensis, braz-tt Ww'-fc (of or from 



