T H R 



finf hair, it is extremely flexible and elaftic ; and if ftill 

 finer, it may bP wound ;.lmort like common thread without 

 brcakmir. The way of doing it is very limple. A piece ot 

 .rlafn tube is heated in the lamp, aiid the end drawn out into 

 a thread by means of another piece of glafs cemented to it. 

 When a fine thread is once drawn, the end is carried round a 

 reel or wheel two or three feet in diameter, and by turmng 

 the wheel and continuing to heat the tube, an endlefs thread 

 is drawn out, winding round it as long as the artiR pleafes 

 or the glafs lads. The quicker the wheel revolves, and the 

 hotter the glafs is kept, the firmer is the thread, which may 

 thus be made as delicate as a fingle filk-worm's thread, with 

 extreme flexibihty. Different coloured threads are made in 

 this way by ufing very deeply coloured glalTes inftead of 

 common glafs. 



TiiuF.ADs, in Glafs. See Glass. 



THREAF, in /igricuhure, a term fignifying a handful, 

 a bundle, or a pottle, in different diftrids of the country. 



THREATENING Letters, in Law. By ftatute 

 9 Geo. I. c. 22. amended by flat. 27 Geo. II. c. 15. know- 

 ingly to fend any letter without a name, or with a fiftitious 

 name, demanding money, vcnifon, or any other valuable 

 thing, or threatening (without any demand) to kill any of 

 the king's fubjefts, or to fire their houfes, out-houfes, bai-ns 

 or ricks, is made felony without benefit of clergy. This 

 offence was formerly high trcafon, by 8 Hen. V. c. 6. 



The offence of fending letters, threatening to accufe any 

 perfon of a crime punifhable with death, tranfportation, 

 pillory, or other infamous puni(hment, with a view to extort 

 from him any money or other valuable chattels, is punifh- 

 able by flat. 30 Geo. II. c. 24. at the difcretion of the 

 court, with fine, imprifonment, pillory, whipping or tranf- 

 portation for feven years. Blackll. Com. book iv. 



THREATS, a fpecies of perfonal injury. Threats and 

 menaces of bodily hurt, through fear of which a man's 

 iiufinefs is interrupted, are comprehended under this de- 

 fcription. A menace alone, without a confequent incon- 

 venience, does not conftitute the injury ; but, to complete 

 the wrong, there muft be both of them together. The 

 remedy for this is in pecuniary damages, to be recovered by 

 aftion of trefpafs, nti et armit; this being an inchoate, though 

 not an abfolute violence. Bbckll. Com. bookiii. 



THREAVE. See Thrave. 



Three Chapters. See Chapter. 



Three Legs, Compajfes of. See Compasses. 



Three, Omhre by. See Ombre. 



Tiikee, Rule of. See Rule. 



T Hr-zs-legged Staff", an inftrument confiding of three 

 wooden legs, made with joints, fo as to (hut all together, 

 and to take off in the middle, for the better carriage ; and 

 ufually having on the top a ball or focket : its ufe is to 

 fupport and adjuft inilruments for ailronomy, furveying, 

 &c. 



T ilUEU-polnted Pkl, in Agriculture and Rural Economy, 

 a tool of the pick-kind, having the broad end formed in a 

 three-toothed manner, about iix inches in length, of great 

 flrength, and having the width, from the outfides of the 

 teeth or prongs, of about fix inches. The other end is 

 formed in the gently curving ordinary one-pointed manner. 

 When complete, it is provided with a liandje of the ftrong 

 wooden kind, inferted into the eye or focket of the head- 

 part, 



TiiKzz-pronged Fori, a name fometimes applied to the 

 common fork which is employed for various purpofes on 

 farms. Sec Prong and Spud. 



TnREE-Jbare Horfe-hoe, a light threc-fltared top; cf the 



T H R 



horfe-hoe kind, for one horfe, which is often found very 

 convenient and ufeful in working the intervals of ridged 

 turnip crops, and thofe of fimilar kinds, as well as for 

 different other purpofes of tillage hufbandry. 



It is conftrufted and wrought fomewhat in the form aiid 

 manner of the common plough, the hoe parts being fo 

 contrived and fet as to pare and clean tlie fides and bottom 

 of each of the ridges in the fame operation. See Horfc- 



HOE. 



Three Brethren Hill, in Geography, a town of Scotland, 

 in the county of Selkirk ; 5 miles N.W. of Selkirk. 



Three Brothers, three iflands in the Indian ocean. 

 S. lat. 3° 44'. E. long. 62° 25' — Alfo, three iflands in 



the Ealt Indian fea. N. lat. 10° 42'. E. long. io8° 



Alfo, three fmall iflands on the coaft of Guiana, in the 



mouth of the EfTequibo Alfo, three fmall iflands in 



the Indian fea, near the E. coaft of Madagafcar. S. lat. 

 13° 20*. E. long. 51° 10' — Alfo, three fmall iflands in 

 the Eaft Indian fea. S. lat. 5° 30'. E. long. 132° 15'. 

 — Alfo, three fmall iflands in the Atlantic, near Prince's 

 ifland. N. lat. \° 32'. E. long. 7°. — Alfo, three fmall 

 iflands in the Eaft Indian fea, near the W. coaft of Am- 



boyna. S. kt. 3° 39'. E. long. 128° 18' Alfo, fmall 



iflands in the Eail Indian fea, near the S.W. coaft 



of Celebes. S. lat. 5° 25'. E. long. 119° 38' Alfo, 



fmall iflands in the bay of Gunong TeUu, on the coaft of 

 Celebes. S. lat. 1°. E. long. 120° 27'.— Alfo, fmall 

 iflands in the Indian fea. S. lat. 6°. E. long. 71° 36'. — 

 Alfo, three hills on the N.E. coaft of Terra del Fuego ; 

 9 miles W. of Cape St. Diego. — Alfo, three hills on the 

 E. coaft of New Holland, fo called by captain Cook. 

 S. lat. 31° 40' — Alfo, three iflands on the Spanifli Main, 

 near the Mofquito ftiore. N. lat. 11°. W. long. 82° 52'. 



Three Creek Run, a river of Virginia, which runs into 

 the Nottoway, N. lat. 36° 36'. W. long. 77° 12'. 



Three Hill IJland, a fmall ifland in the Mergui Arehi^ 

 pelago. N. lat. 10° 13'. 



Three Hills IJland, one of the New Hebrides, in the 

 South Pacific ocean, about 12 miles in circumference. 

 S. lat. 17° 7'. E. long. 168° 35'. See Hebrides. 



Three IJland Harbour, a bay on the coaft of Patagonia, 

 in the Straits of Magellan ; 8 miles N.N.W. of Batclftlor's 

 river. 



Three Iflands, fmall iflands in the Eaft Indian fea, near 

 the E. coaft of Bintang. S. lat. 1° 10'. E. long. 105° 2'. 

 — Alfo, fmall iflands in the Indian fea, near the coaft of 

 Africa. S. lat. 4° 50'. 



Three IJlands Bay, or Harbour, a bay on the E. coaft 

 of the ifland of St. Lucia. 



Three Kings, an ifland in the South Pacific ocean, near 

 the N. coaft of New Zealand, difcovered by Tafman. 

 S. lat. 34° 12'. E. long. 172° 12'. 



Three Rivers. See Trois Ri-uieres. 



Three Rivers Harbour, a bay on the E. coaft of the 

 ifland of St. John, in the gulf of St. Laurence. N. lat. 

 46" 8'. W. long. 62° 10'. 



Three Sifters, three fmall iflands on the W. fide of 

 Chefapeak bay. — Alfo, fmall iflands in the Eaft Indian 

 fea. S. lat. 5° 42'. E. long. 105° 41' 36". 



Three Stone Oar, a rocl^ near the W. coaft of Corn- 

 wall. N. lat. 50° 11'. W. long. 5° 32'. 



Three Sugar Loaves, fmall iflands in the Mergui Ar- 

 chipelago. N. lat. 9° 13'. 



THRELKELDIA, in Botany, has been fo named by 

 Mr. R. Brown, in memory of Dr. Caleb Threlkeld, a Dub- ~ 

 lin phylician, who puhlifhed a Synopfis Stirpium Hiber^ica- 



9 rum 



