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the 7r tlerculis was situated in the coma. On the following eveningat 9 P. M. the Declination of the nucleus was 34 c £, ami its RightAscension 17h. 15m. After this time the tail gradually diminishedin length and lustre ; so that on the 5th of November, 1811, whenthe Declination of the nucleus was 26°, and its Right Ascension 18h. l4m. the length of the tail was not quite 12°, its extremityreaching somewhat beyond the double star i Lyra:. On the 10!hot November, at 7J P. M. the nucleus was in a line with t and /3Cygin, and at the same time formed another right line with J and/S Lyi®. On the 13di of November, the tail covered /S Cygni.On the 16th, the tail covered almost the whole of ihe small con-stellation of the Goose . On the 21st of the same month, the nu-cleus formed a right-angled-triangle with re Aquils aml-r Cygni,the nucleus being at that point of the base upon which the per-pendicular falls. From this time the tail became so very smalland faint, that it ceased to be an object of public attention ; henceit is unnecessary for us to trace its path till the period of its entiredisappearance. We will only add, that the time of this Comet ’s ap-pearance has been much longer than that of any other of which wehave any accurate account; and from this circumstance, it willgreatly assist the astronomer in the attempt to develope the hithertounexplored laws of motion by which these bodies are regulated.

The elements of this comet, according to Burckhardt, Memberof the Institute of Paris , are as below :

Perihelion distance.1,02241

Time of its passage by the Perihelion, ) , Q

London Time, Sept. 12,1811.)

Ascending Node.140° 13'

Inclination. 72° 12'

Place of the Perihelion. 74° 12'

Appian was the first who demonstrated that the tails of cometsWere uniformly opposed to the sun, (Astrunomicum Cssareum,1540 ;) this discovery was at that time confirmed by Gemma Fri-sius, Cornelius Gemma, Fracastor , and Cardan. Notwithstand-ing the authority of these gentlemen, Tycho Bralife ventured tofind fault with their mathematical demonstration. But succeedingastronomers have proved that Tycho Brah£ .vas mistaken, and con-sequently this property of the tail is now universally allowed to becorn et. But. ol wiiat nature the tail is, and why it is projectedin a direction always opposed to the sun, it appears impossible forUs to determine, as there is nothing analogous to it on our globe orin any of the other planets ; it would therefore he waste of time totrouble the reader with the different opinions of astronomers uponthis subject, as even the best of them are but very improbablehypotheses. See Astronomy.

Tail of the Trenches, in the art of war, is the post or place,Where the besiegers begin to break ground.

Tail, Dracon’s, in astronomy, the descending node of aplanet. It marked thus (©). See Node.

Tail, or Fee-Tail, in law, is a limited estate, or fee ; opposedfee-simple. Fee-tail is an inheritance whereof a person is seised,to him and the heirs of his body, begotten or to be begotten ; sothat the tenant in tail cannot alien, either before or after issuehad, or forfeit such lands, longer than for his own life : becausea n estate in tail always remains to the issue of the donee and hisheirs ; or, in case he has no issue, then to the donor and his heirs.•Estates tail of lands are either general or special. General tail isWhere lands or tenements are given to a man, or woman, and theheirs of either of their bodies begotten; which is called a general|®*lj because, however many wives a person that holds by this, He shall have one after another in lawful marriage, his issue by‘hem severally are all capable of inheriting in their turns : and if‘he woman has issue by several husbands, they may all inherit after? ac h other, as heirs of her body. A tall-special, on the other,. an d, is when lands, Sec. are limited to a man and his wife, and‘he heirs of their two bodies begotten, so that the children by a* e cond wife, or former wife, stand absolutely excluded. Where! a .“ds are granted to a man and his heirs-male, or heirs female, ofh is body begotten, such male or female issue shall only inheritPursuant to the limitation: and hence it is, that where a grant is‘° a man and the heirs male of his body begotten, and be has issuea daughter, who has a son, this soil cannot inherit tin-estate, be-cause he cannot prove his descent by heirs-male. Where lands,

, c - are given to a husband and wife, and the heirs of their twou°dies begotten in special tail, and one of them dies without issueaa between them ; in such case, the survivor shall hold the lands

for life, as tenant in tail after possibility of issue extinct, as thelawyers call it. Nevertheless, as great mischiefs were occasionedby inheritances being intailed ; as defrauding of creditors, Sec.disobedience of sons, when they knew they could not be disin-herited, and the like, the judges found out a way to bar an intailedestate with remainders over, by a feigned recovery.

TAILLEBURG, a town of France , in the department ofLower Charente, and province of Saintonge, 6 miles N. of Saintes .Lon. 0. 40. VV. Lat. 45. 46. N.

TAIN, or TAYN E, a district of Scotland in Ross-shire, com-prehending the greater part of that county.

Tain, Tayne, or Thane, an ancient borough of Scotland , inthe above district.

TAJO, the largest river of Spain ; which rises on the confinesof Arragon, runs S. W. through New Castile and Estremadura ,and crossing Portuguese Estremadura,falls into the Atlantic Ocean ,10 miles below Lisbon. It was anciently called Tagus .

TA-JOH, a town of China , in Kiang-si, famous for its magni-ficent temples. Lon. 114. 41. E. Lat. 27. 38. N.

TAl-OUAN, or TAY-OUAN, the Chinese name of theisland of Formosa. See Formosa .

Tai-Ouan, or Tay-Ouan, the capital of the island of For-mosa . Lon. 3. 30. E. of Pekin. Lat. 23. 0. N.

TAI-PING, a city of China , of the first rank, in Kiang-nan, onthe Yang-tse ; 525 milesS. of Pekin. Lon. 118. 25. E. Lat. 31. 13.N.

Tai-Ping, a city of China , of the first rank, in Quang-si, 1175miles S. S. W. of Pekin. Lon. 106. 45. E. Lat. 22. 25. N.

TAI-TGHEOU, acity of China,of the first rank, inTche-kiang,722 miles S. S. E. of Pekin. Lon. 121. 13. E. Lat. 23. 55. N.

TAI-TCHIN, a town of China , of the 3d rank, 260 milesS. E.of Nankin. Lon. 121. 16. E. Lat. 29. 10. N.

TAI-T1NG, a city of the second rank, in Koeit-cheou: 967miles S. S. W. of Pekin. Lon. 105. 15. E. Lat. 27. 5. N.

TAI-TONG, a city of China , of the 1st rank, in Chan-si. Lon.112. 55. E. Lat. 40. 5. N.

TALAMONE, a sea-port of Etruria , fifteen miles N. of Orbi-tello. Lon. 11.6. E. Lat. 42. 20. N.

TALAPOINS, or TALAP1NS, priests of Siam . Theyenjoygreat privileges, but are enjoined celibacy and austerity of life.They live in monasteries contiguous to the temples: and any onemay enter into the priesthood, and alter a certain age may quit itto marry, and return to society.

TALAVERA, a town of Spain , in New Castile, 35 miles W. ofToledo, and 58 S. VV. of Madrid . Lon. 4. 1. W. Lat. 39. 41. N.

TALAVERUELA, a town of Spain, in Estremadura , on theGuadiana ; 14 miles E. ol Badajoz . Lon. 6. 34. W. Lat. 33. 34. N.

TALBOT, William, D. D. an eminent English prelate, bornin 1659, and educated at Oxford. In the reign of James II. hepreached with great courage and zeal against Popery; for which•after the revolution, he was promoted to be dean of Worcester,and afterward bishop of Salisbury. In 1722, he was madebishop of Durham; published several sermons ; and died in 1730.

Talbot, in geography, a rich and populous county of Mary-land. Easton is the capital .

Talbot, a town of Maryland in the above county, 77 milesS. S. W. of Philadelphia . Lon. 76. 12. W. Lat. 38. 49. N.

Talbot, an island in the Atlantic , on the coast of E. Florida ;eight miles long, and two broad. Lon. 81. 42. W. Lat. 30. 36, N.

TALC,-in mineralogy, a term which has been employed to de-note a species of mica ; but is now made to signify a stony substancewhich differs (rom it, especially in an unctuosity sensible to thetouch, and in the vitreous electricity which it communicates tosealing-wax by friction, whilst mica gives it the resinous electricity.Haiiy enumerates four varieties of this stone; namely, the lami-nary talc, or Venice talc ; the foliated talc, or chalk ot Brian^on ;compact talc, as the lard-stone; these three first give the positive orvitreous electricity to sealing-wax. I he fourth variety, or thesteatites talc, communicates the negative or resinous electricity toit by friction. "I tie characters ot this stone are, a specific gravitybetween 3.5834 and 2.9902; a texture easy to he scraped with theknife; a soft and unctuous surface ; the primitive form of a rightrhomboidal prism, its bases having angles of 120° and 60®and in which sections parallel with these bases are easily obtained.Its constituent parts are, magnesia 44, silex 50, and alumina 6.

TALENT, [ talentum, Lat.] a certain weight, or a sum ofmoney. See next Article.

TALENTS,