Page:Cyclopaedia, Chambers - Supplement, Volume 2.djvu/896

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NA I A, in zoology, the name of a fpecies of Coluber, the fcuta of whofe abdomen are one hundred and ninety in number, and the fquamae of the tail fixty. See the article Coluber, Append. NAMES. Specific Names. See the article Specific,

Suppl. NAPELLUS. See the article Aconite, Cycl NAPHA, a name given by many of the writers in pharmacy

to orange-flower water. NASEBERRY tree, the Englifh name of a diftinct genus of plants, called by botanifts Cainito, or CbryfophyUum. Seethe article Chrysophyllum, Append, NASTURTIUM ffquaiicum, the name by which C/Bauhine

calls the Syfimbrium. Seethe article Sysimbrium, Suppl. Nasturtium-/k^/Vhot, in botany, a name ufed by fome for a genus of plants, called by others Cardamlndum, and Tra- ' ptsolum. See the articles Cardamindum, Suppl. and

Trapjeolum, Append. NAVEL (Suppl) — Navel-/jsWj, in fhip-building, large pieces of fluff fitted into the hawfe-holcs, to keep the cables from wearing them. Blancklefs Nav. Expof. p. no. Navel-//«i?, on {hip-board, a rope reeved through a block made fall to the middle rib, and another block made faft to the maft-head. Kavel-hw/ (Suppl.) — BaftardNAVEL-wort, a name fame- times given to the CraJJ'ula of botanical writers. See the article Crassula, Append. Venus's Navel-mw*, the name of a genus of plants, called by authors Ompha lodes. See the article Omphalodes, Suppl. Water N av EL-wort, a name fometimes given to the Hydroco-

tyle of botanifts. See the article Hydrocotyle, Suppl. NKCKIB-el-tJheraf, in Egypt, the head of the fhcrif, or rela- tions of Mahomet, who has the great cognizance of their actions, and the power of inflicting punifhments upon them. Pocock's Egypt, p. 171. NECKLACK-)w7&?. Sec the article Snake, infra. NECTYDALIS, in zoology, the name of a genus of four- winged infects, diftinguifhed by having the antenna; fetace- ous, the exterior pair of wings dimidiated, and the interior pair membranaceous. Hill, Hift. Anim, p. 55. Some have called it a amex, and others zforficula, or ear-wig, but both erroneoufly. Id. p. 56. NEEDLE-/^/?;, the Englifh name of the Syngnathus, with the middle of the body hcxangular, and the tail pinnated. See the article Syngnathus, Suppl.

It is the fame fifli with the Acus Arijlotelis fpecies altera ma- jor. See the article Acus, Suppl. NEEDLE-yZic//, the Englifh name of a fpecies of Centronia, or Ech'modertna. See the articles Echinoderma, Suppl. and Centronja, Append. Needle-^?// is alfo the Englifh name of a fpecies of Turbo, which is {lender, and has ventricofe fpires, and a fmall mouth. See the article Turbo, Suppl. 7W£-Needles. See the article ToucH-needles, Suppl. Shepherd' s-Nef.dlk, the name by which fome writers cail the Scandix, or Venus' 's-comb. See the article Scandix, Suppl. NEGRO-s//, a name by which the palma of botanifts is fome- times called. See the article Palma, Append. NEP, Nepeta, a name fometimes ufed for the Cat-mint, or Ca-

taria of botanifts. See the article Cat aria, Suppl, NEPA, the name by which fome call a genus of infects, other- wife known by that of Scorpio paluflris, the water-fcorpion. Seethe article Scorpio, Suppl. NEREIS, in zoology, a genus of infects of the gymnarthria kind, the body of which is of a cylindric figure ; the tenta- cula are four in number, but two of them are ufually very fhort. Hill. Hift. Anim. p. 92.

Authors have defcribed this genus under the name of Scolo- pendra marina. See the article Scolqpendra marina, Suppl. NERIUM, orNERioN, in botany, the name of a genus of plants, culled in Englifh Oleander. See the article Nerion, Suppl. NETTLE (Suppl.) — Sm-Nettle, the Englifh name of a genus of infects, called by Dr. Hill Medufa. See the article Medusa, Append, J^y^-Nettle, a name by which fome call the Galeopfis of botanical writers. See the article Gale opsis, Suppl. - Shrubby Hedge Nettle, the name given by fome writers to the Praffium, a diftinct genus of plants. See the article Pra- sium, Suppl. NEUROPTERA, in zoology, the name by which Dr. Hill calls a clafs of four-winged flics, from their wings being

membranaceous with nerves, and being difpofed in a reticu- lated form. Vid, Hill, Hift. Anim. p. 69.

NIGHT (Cycl.) — For the divifions of the Night among the antients, fee the articles Day, Hour, csV. Cycl.

NIGHTSHADE, Climbing Nightshade, a name fometimes ufed for the Bafella or Cujhita of botanifts. See the article Cuscuta, Suppl.

Deadly Nightshade* a name by which fome call the Bella- donna, a dictindt genus of plants. See the article Bella- donna, Suppl.

Inchanter's Nigatshade, the Englifh name of a genus of plants, called by botanifts Circaia. See the article CiRC-ffiA, Suppl.

American Nightshade, a name given to the Splanoides, or Rivinia, of botanifts. See the article Rivinia, Suppl.

Virginian Nightshade, the name by which fome call a fpecies of Phytolacca, Seethe article Phytolacca, Suppl.

NINDSI, or Ninzi, the name of a diftinct genus of plants, called by botanifts Shim. See the article Sium, Suppl,

NINSI, in botany, a name ufed by fome for the Panax, or All- heal of Linnams. See the article Panax, Append.

NINTH, in mufic, one of the diiibnant intervals in mufic. It is properly the fecond doubled j but is differently ufed. When an upper part fyncopates, the fecond is accented and treated as a Ninth ; i. e. it is refolved .by an eighth, and accompanied; by a third or fifth, and often a fynccjx^ed fe- venth. But when the lower part fyncopates, the u-cond is not thus ufed, but is accompanied by tfic fourth and fixth. In thorough bafs, as the Ninth has always, or at leaft com- monly, an eight placed alter it thus, 98; to {htw that that is refolved by defcending to the Octave, Vid. Brojf. Diet. MuC in voc

NOLI'ot* tangere, the name ufed by fome for a fpecks of Bal- famine. See the article Balsamina, Suppl.

NQNQ-fo-pretty, a popular name for the Geum of botanical au* thors. See the article Geum, Suppl.

NoKV-fuch, a name fometimes given to the Lychnis of bota- nifts, See the article Lychnis, Suppl.

NOSErbleed, in botany, a popular name for the Millefolium of Botanical writers. Sae the article ■ Millefolium, Suppl.

NOTOPEDA, in zoology, a name fometimes given to the Elater, a genus of four- winged flies. See the article Ela- ter, Append.

NUMB-//, or Cramp-ffo, names given to the Torpedo, which is a fpecies oiraja, See the articles Raja, Suppl. and Tor- pedo, Cycl NUMBER (Cycl) — Figurate Numbers. Thofe of the firft order are 1, I, 1, 1, &c Thofe of the fecond order the fucceffive fums of thofe of the firft order, viz. 1, 2, 3, 4, 5, &c. and form an arithmetical progrefiion. Thofe of the third order are the fucceffive fums of thofe of the fecond, viz. 1, 3, 6, 10, 15, and are the triangular numbers. Thofe of the fourth order are the fucceflive fums of the third, viz. 1, 4, 10, 20, 35, and are the pyramidal num- bers, and fo on.

The figurate Numbers of any order may be found without computing thofe of the preceding orders, by taking the fuc- ceflive products of as many of the Numbers 1, 2, 3, 4, 5, &C. in their natural order, as there are units in the Number, which denominates the order of figurates required, and di- viding thofe products always by the firft product. Thus the triangular Nwnbers are found by dividing the products 1X2, 2X3, 3X4> 4X5) 5X6, '&c. each by the firft pro- duct 1X2. The pyramids alfo are found by dividing the products 1X2X3) 2X3X4) 3X4><5» 4X 5x6, &c. each by I X 2 X 3- *n general, the figurate Numbers of any order denoted by M, are found by fubftituting fuccef- fively 1, 2, 3, 4, 5) &c. in the place of *in the general

exprefllon -

x 4. 1. x + 2. x -f- 3. Sec.

where the factors

2. 3. 4. &c.

in the numerator and denominator are fuppofed to be multi- plied by each other, and to be continued, till the number in each be equal to that which exprefies the order of the figu- rates required, diminifhed by unity. And when a figurate Number of any order is divided by the correfponding figurate of any higher order, the numerator of the quotient is invari- able, and jt. is in its denominator of as many dimenfions as there are units in the difference of the Numbers that denote thofe orders. See Mac Laurin's fluxions Art. 351 in the notes.

-f^w-fl/ Numbers. See the article Figural, Append.

M\ ufi cal Numbers. See the article Musical, Append.

Numbering Rods. See the article Neper's Bones, Cycl.

n NUM-