NOTE 







bone. N., Popliteal, the depression on the posterior 

 surface of the head of the tibia, separating the two 

 tuberosities. N., Pterygoid. Same as Fossa, Ptery- 

 goid. N. of Rivinus, the deficiency in the osseous 

 tympanic ring filled by ShrapnelPs membrane, q. v. 

 N., Sacro-sciatic. See N., Ischiatic. N., Sig- 

 moid, a deep semilunar depression separating the 

 coronoid and condyloid processes of the inferior max- 

 illary bone. N., Spheno-palatine, the notch that 

 separates the orbital and sphenoid processes of the 

 palate bone. N., Supraorbital. See Supraorbital. 

 N., Suprascapular, a notch on the superior border 

 of the scapula at the base of the coracoid process, for 

 the passage of the suprascapular nerve. N., Supra- 

 sternal, the depression at the top of the manubrium, 

 between the two sterno-ciavicular articulations. 



i \jiota, a mark]. A sound. N., Percussion, 

 the sound elicited on percussion. 

 Dtencephalia (not-en-sefa' '-le-ah). See Notenceph- 



Dtencephalocele (no-ten-sef '-al-o-sel) [vurov, back ; 

 '.of, brain ; k>j/i, hernia]. Tumor of the brain 

 in a notencephalus. 



Dtencephalus (not- en - sef- al -us) [vurov, back; 

 of, brain]. A variety of single autositic mon- 

 sters of the species exencephalus, in which the cranial 

 contents are in large part outside of the skull, resting 

 ;upon the back of the neck like a huge " waterfall," 

 but not adherent. Hydrocephalus, to some degree, 

 s almost always present. The cranium is misshapen, 

 :he forehead sloping backward, and the eyes are di- 



ected upward and stand out prominently. 



)teum (no-te'-um) [vutoc, the back://., Notea~\. In 



. the dorsal surface of the body of an animal, 

 ithros (no'-thros) [vudpoc]. Drowsy, torpid, 

 jtochord (no' '-to-kord) [vurov, back ; xopdi/, a cord]. 

 A cellular cord inclosed in a structureless sheath, 

 which in the embryo represents the vertebral column , 

 he chorda dorsalis, or primitive backbone. Also, 

 ncorrectlv the spinal cord, 

 btomelus (no-torn'- el-us) [vurov, back ; ytze/lof, limb]. 

 \ form of double monster in which the rudimentary 

 imbs are attached to the back, 

 litomyelitis (no-to-mi-el-i' -tis) [vuroc , back ; /xve?.6g, 

 i narrow; i^vf, inflammation]. Inflammation of the 

 nyelon, or spinal cord, 

 l'tomyelus (no-to-mi' -el-us) [vuroc, back; /ive/mc, 

 | narrow]. The spinal marrow ; the myelon. 

 I'topodium (no-to-po' -de-um) [vuroq, the back; novg, 

 loot]. In biology, one of the dorsal oars or double 



oot-stumps of certain worms. See Parapodium. 

 I topsyche (no- top-si' -he) [vurog, back; r}wx^, soul]. 



Iseckel's term for the spinal cord, or myelon. 



torhizal (no-to-ri'-zal) [vuroq, the back ; pi^a, root]. 



n biology, having the radicle applied to the dorsal 



art of the cotyledons : incumbent. 



totribe (no' -to-trib) [vuroc , back ; rpifieiv, to rub]. 



n biology, applied to flowers so arranged that the 



ollen comes in contact with the back of a visiting 



lsect. Cf. Pleurotribe, Stemotribe. 

 f totrocha (no-to-tro' -kah) [vuroc, the back; rpoxoc, 

 wheel]. In embryology, a form of segmented 

 d larva in which the segments of the body 



ear half-rings of cilia on the dorsal surface. 

 T ttingham System. See Sewage, Disposal of. 

 *tum (no'-tum) [vurov, vuroc, the back: //., Notd\. 



n biology, the dorsal aspect of the thorax of an in- 



-Ct. Cf. Pronotum, Mesonotum, Metanotum. 

 frtumbrella (not' -um-brel-ah) [vuroc, the back ; um- 



r a, shade]. In biology, the dorsal ectoderm or 



nrotal epithelium of medusae. 



877 NUCLEIC ACID 



Novacula (no-vak'-u-lah) [novare, to make new]. A 

 razor ; a surgeon's knife. 



Noxa (noks'-ah) [L.]. An injurious principle ; especi- 

 ally a pathogenic microorganism, or other materies 

 morbi. 



Noxious (noks'-yus) [noxius, harmful]. Harmful ; 

 poisonous or deleterious. " N. Thing," in forensic 

 medicine anything administered to a person that is 

 harmful in its effects ; especially applied to the pro- 

 duction of abortion. 



Noyes' Method. See Treatment, Methods of. 



Nubecula (nu-bek'-u-lah) [dim. of nubes, a clond]. 

 I. The cloudiness caused by the suspension of in- 

 soluble matter in the urine. 2. A cloudiness of the 

 cornea. 



Nubile (nu'-bil) [nubilis ; nubere, to mam]. Marri- 

 ageable. Of an age at which there exists the possi- 

 bility of procreation or child-bearing. 



Nubility (nu-bil'-it-e) \_nubilitas, from nubere, to marry]. 

 The state of development marked by ability to consum- 

 mate marriage. 



Nucament (««'- kam - ent) [nucamentum, anything 

 shaped like a nut]. In biology, an anient or catkin. 



Nucellus (nu-sel'-us) [micella, a little nut : pi., A'ucel- 

 li~\. In biology, that part of the ovule in which the 

 embryo-sac arises; the equivalent of the macro- 

 sporangium of cryptogams. 



Nuces (nu'-sez). Plural of Nux, q. v. 



Nucha (nu'-kah) [L. ]. The nape of the neck. 



Nuchal (nu'-kal) [nucha, nape of neck]. Pertaining 

 to the nucha, or nape. 



Nuchalalgia (nu-kal-al'-je-ah). Synonym of Nuchal- 

 gia. 



Nuchalgia (nu-kal'-je-ali) [nucha, nape ; a7.yoq, pain]. 

 Pain at the back of the neck. 



Nuciform (nu'-sif-orm) [mix, a nut; forma, form]. 

 In biology, nut-shaped. 



Nucite (nu'-sit), C 6 H,,0 6 + 4.H 2 0. A carbohydrate 

 resembling inosite, found in the leaves of Juglans regia. 



Nuck, Canal of. See Canal. N.'s Diverticulum. 

 Same as N. , Canal of. N.'s Glands. See Gland. 



Nucleal, Nuclear (7tu'-kle-al, nu'-kle-ar) [nucleus, a 

 cell]. Pertaining to or resembling a nucleus ; en- 

 doplastic. N. Figures, the peculiar arrangement of 

 the mitome during karyokinesis. N. Layer, a 

 stratum of gray matter in the cortex of the brain. 

 N. Paralysis, paralysis from lesions of nuclei or 

 centers. N. Spindle, delicate striae appearing in the 

 nucleus undergoing mitosis and arranged in the shape 

 of a double crux with the apices pointing toward the 

 poles of the future nuclei. Its function probably is 

 to guide the movements of the mitome threads. N. 

 Stain, a pigment showing a relatively strong affinity 

 for nuclei. A Direct Nuclear Stain is one that 

 colors nuclei so quickly as to require no subsequent 

 treatment to differentiate them from the plasma. An 

 Indirect Nuclear Stain is one that colors the entire 

 tissue, but in order that the nuclei may be differ- 

 entiated, the color must be removed from the plasma. 

 The more important nuclear stains are : — Bismarck 

 Brown, Carmin, Cochineal, Fuchsin, Gentian-violet, 

 Hematoxylin, Hoffman's Blue, Methylene-blue, 

 Methyl-green. See Stain, Plasmatic Stain, Specific 

 Slain, Stains, Table of, and Pigments, Conspectus of. 

 N. Substance. See Heredity. 



Nucleate, Nucleated (nu'-kle-at, nu'-kle-a-ted) [nu- 

 cleus, nucleus]. Having a nucleus. 



Nuclei (nu'-kle-i) [L. ]. Plural of A'ucleus, q. v. N. 

 of the Thalamus, the three portions into which the 

 cinerea of the thalamus is separated. They are called 

 the anterior, internal, and external nuclei. 



Nucleic Acid. Altmann's name for an organic phos- 



