SCUTELLUM 



1308 



SEAT 



Scutellum (sku-tel' -urn) [dim. of scutum, a shield : pi., 

 Saitella]. I. Scutulum ; the characteristic " plate " 

 of Tinea favosa. It shows a typical central depres- 

 sion with raised edges (cupped), is usually marked 

 with concentric lines, and may be as large as a split 

 pea. It is whitish or pale-yellow in the center, vivid- 

 yellow at the periphery. 2. In biology: [a) (i) In 

 lichens a sessile shield-shaped apothecium ; (2) in 

 Graminecc, the cotyledon that envelops the embryo 

 and is modified to absorb the reserve materials and 

 convey the nutriment to the embryo; (b) (1) one of 

 the sclerites composing the tergum of an insect ; (2) 

 one of the plates of the tarsus of certain birds. 



Scutia (scu'-te-ah) [scutum, a. shield]. A genus of the 

 RhamnetE. A shrub growing in Asia ; the leaves, 

 made into an ointment, are used as an oxytocic in 

 India. 



Scutiform {sku> '-tiform) [scutum, a shield]. Shield- 

 shaped. S. Leaf, the first-formed leaf or cotyledon 

 in Salvinia, so named from its peculiar shape. 



Scutigerous {sku-tij' '-er-us) [scutum, shield; gerere, to 

 carry]. In biology, provided with a scute. 



Scutiped (sku'-tip-ed) [scutum, a shield ;pes, foot]. In 

 biology, a bird with scaled tarsi. 



Scuto-auricularis (sku-to-aw-rik-u-la'-ris) [scutum, 

 shield; auricula, ear]. A muscle attached to the 

 scutiform cartilage of the ear. 



Scutulatio (sku-tu-la'-she-o) [scutum, a shield]. A 

 cutaneous disease of new-born infants. See Ichthyosis 

 congenita and Ichthyosis sebacea. 



Scutulum (sku'-tu-lum). See Scutellum. 



Scutum (sku'-tum) [scutum, a long shield : pi. , Scuta~\. 

 I. An exoskeletal scale or plate. 2. The thyroid car- 

 tilage. S. cordis, the sternum. S. genu, the patella. 

 S. pectoris, the thorax. S. thoracis, the sternum. 

 S. tympanicum, the semilunar plate of bone separ- 

 ating the attic of the tympanum from the outer mastoid 

 cells. 



Scybala (sib f -al-ah). Plural of Scybalum, q. v. 



Scybalous (sib'-al-us) [uKu/iaTuiv, fecal matter]. Of the 

 nature of a scybalum. 



Scybalum (sib' -al-tcm) [aavftalov, fecal matter]. Ab- 

 normally hard fecal matter that has aggregated into 

 lumps. 



Scyllite (sil'-lt) [onvfiaAov, fecal matter], C B H 12 O fi . A 

 glucose obtained from the intestines, kidney, liver, 

 etc., of the hag-fish, skate, and shark. 



Scyphistoma (si-fis' -to-mah) or Scyphostoma, (si-fos'- 

 to-mak) [oki'Qoc, a cup; oro/na, mouth: pi. , Scyphis- 

 tomata, Scyphostomata~\. In biology, the hydra-tube 

 stage in the development of Medusce. It arises from the 

 scyphula, and gives rise to the free-swimming medusa 

 by the tearing away of the larger portion of the 

 body. The remaining stem can, however, become 

 regenerated into a complete attached medusa (mono- 

 disc strobila) ; or the stem of the scyphistoma may be- 

 come regenerated into a new scyphistoma before the 

 first medusa has detached itself; and when this regen- 

 erative process continues without the medusas at once 

 fully detaching themselves we have a polydisc strobila, 

 a temporary animal stock. The whole process is called 

 strobilation, a. v. 



Scyphula (sif'-u-lah) [scypliulus, dim. of scyphus, a 

 cup]. In biology, a stage in the development of the 

 acraspede Meduscc, in which the primitive larva re- 

 sembles an attached coral-like animal. It later 

 develops into an attached young Medusa, the Scyphis- 

 toma, q. v. 



Scyphus {si' -fits') [anvipor, a drinking-cup]. A cup, or 

 structure having the shape of a cup. S. auditorius, 

 S. cochleae, S. vieussenii, the infundibulum of the 

 cochlea. S. lapideus in oculo, a cup-shaped con- 



cretion in the eye, probably identical with what is 

 known as ossification of the choroid. 



Scyros (si'-ros.) Synonym of Callosity. 



Scytalis (sit'-al-is) [anvTaArj, a staff]. A phalanx of the 

 fingers. 



Scythian Disease (sith'-e-an dis-?z'). Atrophy of the 

 male generative organs, with consequent loss of phys 

 ical power, masculinity, etc. It is an attendant or 

 result of sexual perversion, its victims adopting the 

 dress and manners of women. It prevails locally in 

 the Caucasus (as in the time of Herodotus), and is 

 common as far eastward as Alaska. 



Scythrospasmus (si-thro-spaz' ' -mus) [aKvOpoq, angry ; 

 ■ OTraa/ioc, spasm]. A heavy or fatigued expression, 

 regarded as an evil symptom in grave disease. 



Scytitis (si-ti'-tis) [okvtoq, skin ; ing, inflammation]. 

 Inflammation of the skin ; dermatitis. 



Scytoblastema (si-to-blas-te'-mah) [otmtoc, skin ; A 3/<i<T- 

 TT/fia, germ]. The primitive or embryonic stage of 

 the development of the skin. 



Scytoblastesis (si-to-blas-te'-sis) [okvtoq, skin ; ftlac- 

 T//fia, germ]. The condition and progress of scyto- 

 blastema. 



Scytomorphosis (si-to-mor-fo'-sis) [gkvtoc, skin ; fidpip- 

 cxTig, shaping]. An abnormal development of the! 

 skin. 



Scytonemin (si-to-ne'-min) [cKvroq, skin, hide ; 



a thread]. A deep yellow or brown pigment coloring! 

 the filament-sheath in many of the Scytonem 

 See Pigments, Conspectus of. 



Sea (se) [ME., see, sea]. The ocean. S.-moss. Se< 

 Carragheen. S. -sickness, the nausea and vomiting 

 affecting persons at sea, or those who are subjected tcj 

 any undulatory motion like that of a vessel. S.-, 

 tangle, the stem of Lamina via digitata, a niarini; 

 plant. The dried stem, introduced into a moist canal o 

 hollow organ, swells and dilates the cavity. See Ten: 

 S. -water bath. See Bath. S.-weed, any marine plan 

 of the order Alga. S.-weed bath, a bath in sea 

 water charged with an infusion of some medicine 

 weed. S. -wrack. See Fucus vesiculosus. 



Seal (sel) [ME., seel, seal]. A body of wati 

 other material, placed in the trap of a house 

 for the purpose of preventing the ingress of > 

 air. 



Sealing (se'-ling) [ME., seelen, to seal]. The ex< 

 of air from a wound during the process of healing! 

 S.-wax, a product manufactured from shellac, to whic : 

 have been added Venice turpentine to make it moi 

 fusible and less brittle, and some mineral coloring 

 matter, usually vermilion. For black sealing" 

 best ivory-black is used ; for golden-color wax. 

 saic gold " (stannic sulphid) ; for green wax. 

 dereel verdigris, and for the commoner varieties ( 

 materials. 



Seam (sem). See Suture and Raphe. 



Searcher (serch'-er) [ME. , serchen, to search.] 

 instrument used for the detection of stone in tl. 

 bladder. 



Searching (serch'-ihg) [ME., serchen, to si 

 Probing; sounding. The operation of exploring 

 bladder by means of a metallic sound, for the put 

 of detecting the presence or absence of calculi. ! 

 Ocular. See Ocular. 



Seamstress's Cramp. See Cramp. 



Seaside Grape. West Indian kino, from ( 

 uvifera. 



Seasoning (se'-zn-ing) [Fr., saisenner, to have 

 flavor]. Adding a higher relish to food; acclii 

 ing. S. Fever, the febrile symptoms occurring 

 ing the process of acclimatization 



Seat (set) [ME., sete, seat], lireech ; nates. S.-bor. 



