THR be accomplished by the flail : and, if any smut-balls occur in the ears, they will not be broken, but a considerable portion of them be dispersed in winnowhig. I^astly, a larger quantity of chaff is thus obtained ; and, though too great a stock of straw may be produced, for immediate consumption, yet if such article be closely and carefully stacked, it will not be easily in- jured by keepizig. THREAD, a slender twist manufadured by combining the fibres of flax, hemp, cotton, silk; or other vegetable oi* animal sub- stances J the primary operation of which is called SnxNiNG. There are various kinds of this article, such as silk, linen, and cotton thread : the most extensive manufaAory for the last mentioned sort, in this country, is established at Paisley, near Glasgow j which, however, is inadequate to supply the market. — Hence, considerable quantities of this commodity are annually imported, and are subjeft to various duties. Thus, Bruges thread pays the sum of lOs. 10|d. per doz. lbs. ; Cross-how thread, i6s. lid. per 100 lbs. ; Outnal thread, 19s. 5|d, per 12 lbs. j Pack thread, 14s, 6|d. for every lOOlbs.j lister's thread, 3s. per lb. j and IVhited-hroicm thread, ips.Sfd. per 12lbs.— By the 7 and 8 Will. III. C 39, any kind of linen-thread, yarn, &c. may be imported from Ireland, free of duty j provided the master of the vessel produce cer- tificates, of the marks, numbers, ice. of the packages from the ship- ping-port, together with the names of the persons who exported them, gnd also of the consignees ; at the same timedeclaring upon oath, that
- ^uch goods were a6lually shipped.
- iHIlIFr,or Statkef L. a genus
[2, THR L2I3 of plants comprising 22 species, 3 of which are indigenous : the fol- lowing are the principal : 1. The Lhno7iium. See L.^.- VENDER-THRIFT. 2. The Armeria, Commok Thrift; Sea-gilliflower ; or Sea-cushion, which is perennial; grows in meadows, and on rocks near the sea-coast; where itflowera in the months of May and June. When in full blossom, it presents a beautiful sight in pasture-grounds j on which account, it is likewise of- ten planted in gardens, as an edg- ing for borders. The Sea-gilliflower forming whole swards, or tnfts of grassy, solid, and smooth leaves, its cul- ture is much recommended in loose sands, which are thus speedily con- solidated : the naked stalk, in ge- neral, attains only the height of 6 inches. — The plant is eaten by horses and goats, but refused by sheep. THRIPS, a genus of insea* comprising 1 1 species, that are va- riously named, according to the trees which they infest. These vermin aie extremely minute; having a small slender body, and a rostrum, or beak, which is scarcely percep- tible to the naked eye : lliey are very pernicious to fruit-trees, at- tacking both the leaves and fruit ; but may be extirpated by resorting to the method already pointed out, vol. ii. pp. 21, and 22. THROAT, or the cavity behind the tongue and the curtain of the palate : the soft parts, of which it Is composed, are the common integu- ments and the muciparous glands. The principal use of these parts be- ing destined to support and facili- tate swallowing, breathing, speech, and hearing, it is obvious that all local aifeftloqs, b/ which the ex^ P 3 £rcisc
