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T. Vjsceralis, which is inclosed in a vesicle, broad in thefore-part, and pointed in the trader part, inhabits the liver, theplacenta uterina, and the sack which contains the superlluous fluidof dropsical persons.

T. Vulgaris, or Common Tape-Worm , has two lateralmouths in each joint; it attaches itself so firmly to the intestines,that it ran scarcely be removed by the most violent medicines ;it is slen ler, anil has the appearance of being membranaceous ; itis somewhat pellucid, from 10 to 16 feet long, and about four anda half iin< s broad at one end.

TAFALA, TAFALLA, a city of Spain, in Navarre ; 15 milesN. W. of Sanguesa . Lon. 1.36. W. Lat. 42.29. N.

TAFFAREL, in ship building, the uppermost part, frame, orrail, al'afi mer the poop. See Ship-Building .

'IAFFKI’A, or TAFFETY, in commerce, a fine smoothsilken stuff, remarkably glossy. There are taffeties of all colours,some plain, and others striped with gold, silver, &c. otherschequered, outer flowered, &c.

r l A FI LET, a kingdom ot Africa , in Barhary, belonging tothe emperor of Morocco , lying along the East side of MountAlfa; hounded on the N. l>y the kingdoms of Fez and Tremesen ;E. by Beribeiies; S. by the Desert of Barbary ; and W. by Fez,Id, ■roceo, and Sus. It is mountainous, and is divided into threeprovinees, viz. Dias, S ira, and Tuet. Tafilet is the capital.

TAGAI, a town ol Russia , inSimbirskoe ; 48 miles W. of Sim-b r-k. I.on 37. 5. E Lat. 54. 20. N.

1 AGAOS 1 , TAGAST, or TAGOAST, a town of Morocco ,in Sus. 140 miles S. W. of Morocco , Lon. 8. 5. W. Lat. 29. 23. N.

TAGARA, a city of ancient India , the metropolis of a largedistrict cahed Anaca.

TAGE, a large town of Arabia Felix, on the road from Mecca to Yem, n. Lon. 42. 5. E. Lat. 21. 50. N.

TAGES, in the mythology, a son of Genius, and grandson ofJupiter, who first taught the Etrurians augury.

TAGETES, Maricold ; in botany, a genus of plants belong-ing to the class syngenesia, and order polygamta superflua; naturalorder, Cotnposilse. Receptacle naked; pappus with five erectawns or beards ; calyx one-leafed, five-toothed, tubular; floretsof the ray four, peisistent. There are four species.

T. Ekecta, the African Marigold, is a native of Mexico ,but has been cultivated in British gardens since 1596.

TAGUMADERT, a town of Morocco , in Tafilet. Lon. 6.43. W. Lat. 27. 10. N.

TAGUS, in ancient geography, a river of Spain , which, aftercrossing Lusitania, falls into the Atlantic. Its sands abound withgold-duA. It is now called Tajo.

TA-HEAN, a town of China, of the second rank, in Yun-nan :1130 miles S. W. of Pekin . Lon. 102. 6. E. Lat. 25.52. N.

TAHEJ, a town of Plindoostan ; 150 miles W. of Amedabad,and 400 S. of Moultan. Lon. 69. 58. E. Lat. 23. 16. N.

TAHOEREWA, one of the Sandwich islands. It is small,and unfertile. Lon. 156. 33. W. Lat. 20. 38. N.

TAHOORA, one of the Sandwich islands in the South Sea.It is uninhabited. Lon. 160. 24. W. Lat.21. 43. N.

TAHOOROWA. See Tahoerewa.

TAHPANHES, or TEHAPHNEF1ES, an ancient city ofEgypt , supposed to be the same with Daphne.

I A I, a town of China , of the second rank, in Chan-si; 175 milesW. S. W. of Pekin .

Tai, a town of China , of the second rank, iu Kiang-nan; 22miles E. of Yang-tcheou.

TA1EF, orTAIF, a town of Arabia Felix, in the province ofHedsjas, 48 miles E. of Mecca .

TAIL, the tram of a beast, bird, or fish ; which, in land-animals,serves to drive away flies, &c. and in birds and fishes, to directtheir course.

Tail of a Comet , denotes the luminous rays issuing from acomet towards that part of the heavens, from whence it seems tomove. It is from this train of light in the resemblance bf hair,-which accompanies almost every one of these celestial bodies, thatthe ancients gave them the name of “ Comets ” from xu/jwti, theGreek word for hair. From the appearance of their tails theyhave been classed by astronomers under distinct genera, (Plinv, II.II evelius iu Coinetograplnd.) However there have appearedcomets without either tail or coma, so that these appendages mustHot be looked upon as indispensable characteristics by which a

comet is to be distinguished from any of the other planetarybodies. Those comets which have appeared with the longesttails were visible in the following years to the inhabitants of ourglobe; viz. B. C. 371, B. C. 130, A. D. 135, A. D. 1456,A. D. 1460, A. D. 1618, A. D. 1680, A. D. 1682, A. D. 1744,

A. D. 1769, and A. D. 1811. That spoken of by Aristotle ,which appeared about B. C. 371, had a tail which extendedthrough 60°, or about a third of the hemisphere. That mentionedby Justin, (lib. 37,) which appeared on the birth of Mithridates ,

B. C. 130, was so stupendous, as to occupy a space of the heavens

equal to 45°. Another comet, an account of which is given bySeneca (VII. 15,) and which was visible in A. D. 135, extendedover the whole of the galaxy, or milky way. The comet of 1456occupied two signs, or 60 degrees, (Pontanus in Centiloquio,) andthat of 1460, 50 degrees. The comet of 1618 had a tail not lessthan 70 degrees long, according lo the testimony of Kepler, andon the lOlli of December of the same year Longotnontanus statesit not lo have occupied less than 104 degrees!! ! Since this timethere has not appeared another that has even equalled this, andthere lias been only one which might be compared to it, as it re-spects its brightness, and the extent of its tail; we mean that mostastonishing one of 1680, which was accurately observed by theimmortal Sir Isaac Newton and his contemporaries. The cometof 1744, (vulgarly known by the North Britons, under the ap-pellation of “ The Prince’s Comet, ” because it immediatelypreceded the rebellion of 1745,) was rendered very remarkablefrom the circumstance of its having several tails, which were formedby the general tail being divided into several branches, and whichextended on the 19th of February through an angle of 30 degrees.In the southern regions of the earth, where there is almost con-stantly a very brigTit and serene sky, the tails of comets are moreeasily distinguished, and appear considerably longer. The cometof 1680 had a tail of 62° in length at Paris, according to Cassini,and of 90° at Constantinople ; that of 1759 appeared at Paris,almost without a tail; and it was with considerable difficulty, thata faint one of one or two degrees could be perceived, whilst atMontpellier , according to M. de Ratte, on April 29, the tail oc-cupied not less than 25°, being very conspicuous through 10° ofthis angle. M. de laNux, while at the Isle of Bourbon, saw itconsiderably longer. The tail of the comet of 1769 appeared 10°long at Paris, 40° at Marseilles, 70° at Boulogne, and M. Pingrd,observed it of the most astonishing length of 90°, while at seabetween Teneriff and Cadiz . The comet of 1807 which appeared inthe constellations of Hercules and Lyra, had scarcely a tail of 2° inlength, while that rather remarkable one of 1811, when passingthrough the great constellation of Ursa Major, appeared with atail of not less than 12° in length, which was in almost a direct linewith the a Ursa; Minoris. The breadth of the tail, on Sept. 27,of this year was equivalent to the angle included between the * and£ Ursae Majoris . On this evening the i was covered by the tail,and the f almost in contact with it, while the nucleus was situatedseveral degrees in an almost direct south position below these twostars, and made a very elegant appearance. On the evening of the1st of October, the north declination of the nucleus was precisely50 degrees, its place being about 33 minutes of a degree to thesouth of the star of the fourth magnitude, which is situated verynear the left ear of Bootes ’s north dog. On the 6th of Octo-ber, the nucleus was about 2°^ above the x Bootis , while the tadextended to the very astonishing length of about 18°, reaching! 0within about 22°^ of the north pole, its direction being between th ei and a Draconis, covering in its passage the 0 Bootis . The northdeclination of the nucleus this evening was 49j° N. On the 8thof the same month the nucleus made very nearly a perfect rhom-bus with the x and i Bootis, and n Ursae Majoris , the extent of t- ,ctail this evening being not less than 19°. On the 15th of the sam®month the u Ilerculis was covered by the tail. On the evening otthe 17th of October, the angular length of the tail was about 2° ’its extremity reaching to the £ Draconis. On the 23d of Octoberat 9 P.M.' the nucleus was situated precisely half-way betweene and ,, Ilerculis; and, as the angular distance of these two staris 6* 45', consequently that of the nucleus from either of th°°was 3° 22^' Declination of the nucleus at this time was 38° 10 _

and its Right Ascension 16h. 56m. On this evening the tail *Ppeared unusually extended and brilliant ; its angular lengthybmijeequal to 24° ; and the motion of the Comet at this time 4 1 32 j 1an hour, or 1“ 49' 5 ” in a solar day. Op the 25th of Octob ’