NITROFORM 



873 



NOCUOUS 



on. N. -compound, a carbon compound that is 

 formed from another by the substitution of the mona- 

 tomic radicle N0 2 for hydrogen, and in which the 

 nitrogen atom is regarded as directly joined to a 

 carbon atom. 

 Nitroform I ni f -tro-form) [yirpov, natron ; forma, form], 

 CH(N0 2 ) 3 . An oily acid compound, chemically 

 analogous to chloroform. It is usually obtained by- 

 treating biliary acids with nitric acid. 

 Nitrogen (ni' '-tro-jen) [virpov, natron; yewav, to beget]. 

 X — 14; quantivalence I, III, v. One of the non- 

 metaliic elements, gaseous at ordinary temperatures. 

 It is a component element of albumins, proteids, urea, 

 and other organic substances, of alkaloids, ammonia, 

 and its derivatives, and many other inorganic sub- 

 stances. It forms about 79 per cent, of the air, and is 

 most active in combination with oxygen. The French 

 call it azote. The salts of nitric acid are called nitrates, 

 those of nitrous acid nitrites. See Elements, Table 

 of A description of various methods for detecting 

 nitrogen is appended : Kjeldahl's Method ; the sub- 

 stance is dissolved by heating it with concentrated sul- 

 phuric acid. Potassium permanganate (pulverized, or 

 dissolved, in sulphuric acid) is then added until a 

 distinctly green color appears. The liquid is diluted 

 th water and the ammonia is expelled by boiling 

 h sodium hydroxid. Limprecht's Method, a 

 thod of determining the nitrogen of nitro-com- 

 nds and nitroso-compounds indirectly by means of 

 titrated solution of stannous chlorid. Will and 

 arrentrap's Method ; two parts of calcium hydrate 

 added to one part of an aqueous solution of 

 e sodium hydroxid ; the mixture is evaporated and 

 ntly ignited. The weighed, finely-pulverized sub- 

 stance is mixed with soda-lime (about ten parts) and 

 the mixture is placed in a combustion -tube, about 30 

 cm. long, which is filled in with soda-lime. In the 

 open extremity of the tube is placed a rubber stopper 

 bearing a bulb-apparatus containing dilute hydrochloric 

 acid. The anterior portion of the bulb is first heated 

 in the furnace ; then, that containing the mixture. 

 That all of the ammonia may be carried into the bulb, 

 j air is conducted through the tube, after breaking off the 

 I point. The ammonium chlorid in the hydrochloric 

 acid is precipitated as ammonio-platinum chlorid by 

 means of platinic chlorid, and the residual platinum is 

 ■ weighed. One atom of platinum corresponds to two 

 molecules of NH 3 or two atoms of nitrogen. N., 

 Gaseous Oxid of. See Nitrous Oxid. 

 Nitrogenized (ni-trof '-en-lzd) [virpov, natron; yewav, 



to produce]. Containing nitrogen. 

 Nitrogenous [ni-troj' '-en-its') [virpov, natron ; yewav, 



to produce]. Containing nitrogen. 

 Nitroglycerin {ni-tro-glis f -er-in)[yirpov, natron; y/vKir, 



I sweet], C 3 H 3 N 3 9 . Glonoin, Trinitrin, Trinitrite of 

 Glyceryl: Glycerol Xitric Ester ; a substance produced 

 by the action of a mixture of sulphuric and nitric acids 

 upon glycerol. It is a colorless oil, with a sweet taste, 

 and is poisonous when taken internally. It is insol- 

 uble in water. Heated quickly, or upon percussion, 

 it explodes very violently. Mixed with Kieselguhr it 

 f->rms dynamite. Therapeutically, it acts like amyl 

 nitrite. Dose gr. -^-J^. Dose of the tincture, 



I one per cent, in alcohol, n\ }4-\. N., Liquor (B. P.), 

 contains pure nitroglycerin one part by weight, recti- 

 fied spirit q. s. to produce loo fluid parts. Dose n\ 

 K-iJ- N., Tabellae (B. P.), tablets of chocolate each 

 containing gr. T ^ of pure nitroglycerin. Dose j-ij. 

 Spiritus glonoini (spirit of nitroglycerin) ; an alcoholic 

 solution containing one per cent, by weight of glonoin. 

 itroleum ini-tro'-le-um). Synonym of Nitroglycerin . 

 ltrolin ' ni'-tro-lin) [virpov, natron ; oleum, oil]. An 



explosive compound consisting of a mixture of cellu- 

 lose, niter, and nitrosaccharose. 



Nitrometer {ni-trom'-et-er) [yirpov, natron; fierpov, 

 measure]. An apparatus for collecting and measur- 

 ing nitrogen gas, or for decomposing nitrogen oxids 

 and estimating the resulting gases. 



Nitromuriatic Acid {tii-tro-mu-re-at'-ik). See Acid, 

 Nitrohydroch loric. 



Nitrosaccharose {ni-tro-sak f -ar-oz)[virpov, natron; cok- 

 %apov, sugar]. An unstable, resinous, explosive com- 

 pound produced by treating saccharose with nitric acid. 



Nitrosate [ni' ' -tro-sdt)[yirpov , natron]. One of a class 

 of carbon compounds resulting from the action of 

 nitrogen tetroxid upon the alkylenes. 



Nitroso- (ni-tro / -so-) [yirpov, natron]. In chemistry, a 

 prefix signifying combination with nitrosyl, the univa- 

 lent compound radicle, NO. N.-amins, a class of 

 nitroso-compounds in which the nitroso-group is linked 

 to nitrogen. They are mostly oily, yellow liquids, 

 insoluble in water, and may be distilled without suffer- 

 ing decomposition. N. -compounds, a class of 

 chemic compounds containing the group NO attached 

 to carbon. N. -phenol. See Qiiinoxirn. 



Nitrous (ni'-trus) [virpov, natron]. In chemistry, per- 

 taining to or derived from niter. Nitrous compounds 

 contain less oxygen than do nitric compounds. N. 

 Acid. See Acid, Nitrous. N. Ether, C.,H 5 N0 2 ; a 

 very volatile liquid, with properties very similar to 

 those of amyl nitrite. N. Oxid, Laughing gas ; 

 a gaseous compound, having the structure N,0.,. In- 

 haled, it produces cerebral excitement, followed by 

 anesthesia. It is much used in dentistry. .See Anes- 

 thetic. 



Nival (ni f -val) [nivalis, snowy]. Living in or near 

 snow. 



Njinio-wood [African]. A remedy used in West 

 Africa in the treatment of gastric pains and loss 

 of appetite. Its effects are similar to those of coca. 

 Unof. 



Noasthenia {no-as-the 1 '-ne-ah) [vooc, mind ; aaOeveia, 

 weakness]. Mental feebleness. 



Nocard, Bacillus of. See Bacteria, Synonymaiic 

 Table of. 



Nocarodes (no-kar-o' -dez) [vump, lethargy ; eldoc, 

 like]. Lethargic. 



Nocent (no / -sent) [nocens, from nocere, to harm]. 

 Harmful ; injurious. 



Noctambulation(«0£-/V7w-£«-/s / -^««) [noctambulatio ; 

 nox, night; ambulare, to walk]. Same as Somnam- 

 bulism. 



Nonambulatory (nok-tam' ' -bu-la-tor-e) [nox, night ; 

 ambulare, to walk]. In biology, wandering at night, 

 as many predatory mammals. 



Noctambulism ( nok - tarn'- bu - lizm ). See Somnam- 

 bulism. 



Noctidial (noh-tid'-e-al) [nox, night; dies, day]. 

 Lasting for a day and a night, or for twenty- four 

 hours. 



Noctisurgium (tiok-tis-ur' -je-uni). Synonym of Som- 

 nambulism. 



Nocturnal [tiok-tur 1 'nal) [nocturnus, of the night]. 

 Pertaining to the night-time. N. Blindness. See 

 Hemeralopia. N. Crisis, the nightly exacerbation of 

 symptoms. N. Emission and N. Pollution. See 

 Spermatorrhea . N. Enuresis, incontinence of urine 

 at night during sleep. N. Epilepsy, epilepsy in 

 which the convulsions occur at night. N. Sight. 

 Same as Hemeralopia. 



Nocuity ynok-zd -it-e) [nocuus, injurious]. Injuriods- 

 ness ; harmfulness ; the quality of being noxious. 



Nocuous {nok'-u-us) [nocuus, injurious]. Noxious; 

 hurtful ; venomous. N. Meat, meat from animals 



