IIKDKRIN 



547 



IIKI.K ( >R1 BIN 



Hederin [hed'-er in) [hedera, European Ivy]. An in- 

 tensely bitter alkaloid from the seeds of // lera helix. 

 It is said to be actively febrifuge. (The gum of ivy 

 has also been called hederin?] 



Hedge-hog Crystals. Crystals of male of soda found 

 as a urinary deposit. The crystals are globular, with 

 spiny projections, and may cause severe vesical irrita- 

 tion. 



Hedge-hyssop [hej-his* up). See Gratiola. 



Hedonia {he-do* '-ne-ah) [fjoovi/, pleasure]. Abnormal 

 cheerfulness ; amenomania. 



Hedonism [hed'-o-nizm) [fyhvij, pleasure]. The pur- 

 suit of pleasure ; in psychic medicine, the unreasoning 

 pursuit of some hobby or whim. 



Hedrocele (hed'-ro-sil) [edpa, anus; />/,///, tumor]. A 

 hernia in which the part protrudes through the notch 

 of the ischium. Also, prolapsus of the anus. 



Hedrosyrinx [hed-ro- si' '-rinks) \jt6pa, anus; funda- 

 ment; ovptyi;, pipe]. Fistula in ano. 



Hedwigia [hed-wif '-e-ah) [after Johann Hedwig\. A 

 genus of amarydaceous trees. H. balsamifera. of 

 the W. Indies, affords a resin, not unlike copaiba in 

 its uses. The bark is antiperiodic, and contains a 

 convulsivant alkaloid, which would appear to be a 

 powerful heart-depressant and antithermic. 



Hedyosmon [hed-e-os' -mon) [$<K>c, sweet; hop.fi, odor]. 

 A genus of tropical chloranthaceous trees and shrubs. 

 H. arborescens, a tree of Jamaica, affords a remedy 

 for dyspepsia. H. nutans, a shrub of the W. Indies, 

 has leaves that are good for headaches. 



Heel (hll) [ME., heel, heel]. The hinder part of the 

 foot. H.-bone. See Calcaneum. 



Hegar's Sign. See Signs and Symptoms, Table of. 



Hegar-Kohrn Method. See Treatment, Methods of. 



Heidenhain, Demilune Cells of. See Demilune and 

 Crescent of Gianuzzi. H.'s Method. See Stains, 

 Table of. H., Parietal Cells of. See Delomorphous. 

 H, Rods of. See Rods. H.'s Solution. See Stains, 

 Table of. 



Heimia [Ifim'-e-ah) [after Ludwig Heim, a German 

 botanist]. A genus of lythaceous shrubs of N. and 

 S. America. H. salicifolia (hanchinol), found in 

 Texas and far to the South, is resinous, antisyphilitic, 

 hemostatic, and febrifuge. Unof. 



Heintz's Method. A method of estimating uric acid 

 in the urine. Take loo c.c. of urine. Add to this 

 5 c.c. of HC1. Lay the mixture aside for 24 hours. 

 Collect the crystals on a weighed filter-paper, wash 

 with dilute HC1 ; dry at 100 C, and weigh. The 

 increase in weight will give the percentage of uric 

 acid. 



Heisch's Test. See Tests, Table of. 



Heister's or Heisterian Valve. A fold of mucous 

 membrane in the cystic duct arranged in a spiral. 



Heitzmann's Theory. The theory that the axis-cyl- 

 inder of a nerve-fiber is ordinary connective tissue 

 modified for the transmission of special impulses. 



Hekistotherm [hek-is / -to-therm) [//kiotoc, least, worst; 



(tipi/tj, heat]. In biology, a plant that can subsist 



with a minimum of heat, e.g., a member of the Arctic 



or Antarctic flora 



Helcoid (hel'-koid) [i'/hoc, ulcer; ehhc, likeness]. 



Resembling an ulcer. 

 Helcology (kel-kol' -o-je) [cIkoc, ulcer; ?6yoc, science]. 



The pathology and treatment of ulcers. 

 Helcoma [hel-ko' -mah) [efacupa, an ulcer: //. , Helco- 



matd\. An ulcer. 

 Helcomenia [hel-ko-me f -ne-ah) [eTiicog, ulcer; [irjv, 

 month]. Vicarious menstrual discharge from an 

 ulcer. 

 Helcoplasty [heV ' -ko-plas-te) [eX/coc, ulcer; kM/toeiv, 

 to shape]. The treatment of ulcers by skin-grafting. 



Helcopoiesis [hel-ko-poi ' ■. ulcer; - 



making]. The surgical formation of an issue, for 

 counter-irritation. 



Helcosis [hel-ko 1 '-sis) \j'/Kuair, ulceration]. The forma- 

 tion and development of an ulcer. 



Helcotic [hel-kot'-ik) [eA«6»r/«Jc, pertaining to an ulcer]. 

 1 Icerative; of the nature of or accompanied byulci 

 lion. 



Helenin (hel'-en-in) , C 6 H 8 0. Alant< amphor; Inulol ; 

 the active principle of inula. It is a faintly odorous 

 and nearly tasteless, volatile substance, insoluble in 

 water, but soluble in ether, oils, and hot alcohol. It 

 ; germicidal, and mmended for 



use m diphth 1 tuberculosis. Unof. 



Helenium ■'. -e'-ne-um) \fkeviov, elecampane]. 1. 

 Same a- Inula, a. ?■. 2. A genus of composite North 

 American herbs. H. autumnale, -nee/, wort. H. 

 nudiflorum, and H. bolanderi are strongly errhine, 

 and are sub I for arnica. H. puberulum is 



tonic, alterative, and errhine. H. tenuifolium, of 

 the Gulf States, is said to be a destructive cattle- 

 poison. Unof. 



Helianthella [he-le-an-theV -ah) \ffhoq, the sui 



flower], \l'/!"i-.i| North American compositi herbs. 

 The root of //. tenuifolia is aromati ectorant, 



antispasmodic, and, in large doses, emetic. It is ol 

 reputed service in pulmonary complaints. Dose of 

 the fid. ext. ttlv-xxx. Unof. 



Helianthemum [he-le-an* -them-um) \fj~Aioq, sun ; a 

 flower]. Frostwort ; Rock Rose. The herb H. cana- 

 densi, astringent, aromatic, tonic, and alterative. It 

 is useful in diarrhea, scrofula, and secondary syphilis. 

 Dose of the fid. ext. rr^v-xx. L'nof. 



Helianthin [he-le-an' '-thin) [','". tie sun; fivfloc, a 

 flower], C g H 4 SO,Na,N:N.C 6 H 4 N < II. 1, Methyl- 

 orange ; an orange-yellow powder used as a dye and 

 as a test in analyses. See Pigments, Conspectus of. 



Helianthus [he-le-an' -thus) [//>/oc, sun ; avtiog, flower]. 

 A genus of composite-flowered plants. The sun- 

 flower. H. annuus, a commonly cultivated specie^, 

 affords highly useful, oil-bearing seeds, the seeds of 

 some varieties being also edible. H. tuberosus, the 

 Jerusalem Artichoke, has large tuberous roots, some- 

 times eaten when cooked or pickled. Several of the 

 species are medicinal. 



Helichrysum [he-le-kri' '-sum) [ffltog, sun; \i" ' 

 gold]. A genus of old-world composite plants. The 

 European species (as H. arenarium, H. stcechas) 

 are aromatic stimulants, used in domestic practice. 

 Several South African species (H. auriculatum, im- 

 bricatum, nudiflorum, etc.) are used as pectoral 

 teas. 



Helicin [heP-is-in), C,. t H 16 0.. A glucosid, produced 

 I j oxidizing salicin with HN0 3 . It dissolves with 

 difficulty in water, crystallizes in small needles, and 

 melts at 175 C. 



Helicine (keP-is-in) [pu%, a spiral]. 1. Tortile, or 

 spiral in structure. 2. Pertaining to the helix. H. 

 Arteries, arteries proceeding from the profunda penis 

 branches of the pudic,and from the dorsal arteries of 

 the penis. See .Arteries, Table of. 



Helicogyrate [hel-ik-o-ji' -rat) \pul-, a spiral; yvpog, a 

 ring]. In biology, having a spiral annulus, as the 

 spore-cases in trichomanes. 



Helicoid [heP-ik-oid) \}'/.<z, a spiral ; dd~oc, form]. 

 Spiral ; coiled like a snail-shell or helix. 



Helicopepsin [hel-ik-o-pep' -sin) [>>/5, a spirally coiled 

 snail ; - . digestion]. A peptic ferment found by 

 Krukenbergin snails. 



Helicorubin [hel-ik-o-ru' -bin) [ehd-, a spiral, the snail; 



. ruby]. A pigment of certain invertebrate^ ; 



the same as Hemochromogen and Enterohematin, </. 7: 



