HER 



195 



HET 



herpes, n., herp'-ez (L. Tierpes, a 

 spreading eruption on the skin 

 from Gr. herpo, I creep along), 

 a skin eruption consisting of 

 clusters of vesicles upon an in- 

 flamed base : herpes labialis, lab'- 

 i-dl'is (L. labialis, pert, to a lip 

 from labium, a lip), herpes 

 occurring on the upper lip : h. 

 zoster, zost'er (Gr. zoster, a 

 girdle or belt), a variety of herpes 

 also called * shingles, ' which is of 

 neurotic origin. 



hesperidium, n., hZs'-per-id'-i-tim, 

 (L. Hesperus, Gr. Hesperos, Hes- 

 perus, western in allusion to 

 such fruit coming from the 

 west of Europe), a fruit such as 

 the orange, lemon, shaddock, in 

 which the epicarp and mesocarp 

 form a separate rind, the seeds 

 being embedded amongst a mass 

 of pulp. 



heterocephalous, a., hei'$r'd'Se'f / - 

 dl-us (Gr. heteros, another ; Tceph- 

 ale, the head), in bot., having 

 some flower - heads male, and 

 others female, on the same 

 plant. 



heterocercal, a., het'-er-Q-serk'-al 

 (Gr. heteros, another ; kerkos, a 

 tail), applied to fishes having 

 unequally lobed tails, as in the 

 sharks and dogfish. 



heterochromous, a., he't'e'r-o- 

 krom f 'US (Gr. heteros, another ; 

 chroma, colour), in bot., having 

 the central florets of a different 

 colour from those of the circum- 

 ference. 



heterocysts, n. plu., hetfer-o-sists 

 (Gr. heteros, another; Tcustis, a 

 bag), in bot., colourless large 

 cells, incapable of division, 

 occurring at intervals in the 

 threads of Nostochinese. 



heterodromous, a., JiU^r-od'-rom* 

 us (Gr. heteros, another, different; 

 drdmos, a course), in bot., hav- 

 ing spirals running in opposite 

 directions ; running in different 

 directions, applied to the arrange- 

 ment of the leaves when these 



follow a different direction in the 

 branches from that pursued in 

 the stem. 



hetercecium, n., hZt'-Zr-e'-shi-tim 

 (Gr. heteros, another, different; 

 oikos, a house), applied to the 

 potato fungus, so named on the 

 supposition that it exists as a 

 parasite on some other plant be- 

 fore it attacks the potato, and so 

 the potato fungus has received 

 various names accordingly : 

 heteroecism, het'-Zr-e-sizm, the 

 state or condition of a parasitic 

 fungus, which is found in one 

 stage of development on one 

 body, and in another stage of 

 development on quite a different 

 body. 



heterogamous, a., he'tler-tig'-dm-us 

 (Gr. heteros, another, different ; 

 gamos, marriage), in bot., having 

 the essential parts of fructification 

 on different spikelets arising from 

 the same root ; having hermaph- 

 rodite and unisexual flowers on 

 the same head, as in Compositae ; 

 heterogamy, n., het'e'r-o'g'am-i, 

 a change in the function of male 

 and female flowers ; the state in 

 which the sexual organs are 

 arranged in some unusual 

 manner. 



heterogangliate, a., hZt'er-o-gang'- 

 gli'dt (Gr. heteros, another, 

 different ; gangglion, a little 

 tumour under the skin), in zool. , 

 having a nervous system in which 

 the ganglia are scattered and 

 unsymmetrical, as in the Mol- 

 lusca. 



heterogeneous, a., he't'gr'd-jen'e'' 

 us (Gr. heteros, another, different; 

 genos, birth, race ; genndo, I 

 generate, I produce), of a differ- 

 ent kind or nature ; confused 

 and contradictory: heterogenesis, 

 n., hZt'-Zr-o-fin'-es-is (Gr. genesis, 

 origin, source), the doctrine that 

 certain organisms are capable of 

 giving origin to others totally 

 different from themselves, and 

 which show no tendency to revert 



