5^2 Proceedings of Learned Societies. [Jan* Ij 



Loft— by thy chofen children fold : The mock'ry of a mongrel race. 



And cenquer'd— not by fteel, but gold : Sordid, illiterate, and bafe. 



Loft — To fcience loft, and lettered truth, 



The genius of thy native youth ; 



To Cjni or Ifis glad to roam, 



- Nor keep a heart or hope for home : 



«.. Thy fpailc of independence dead ; 



Thy life of life, thy freedom, fled. 



Lol>— bv a low and fervile great, i>7u. ./unu c ^ _- ui-ji 



_„, , '., . . , e Where ihall her fad remains he laid ? 



who fmile upon their country s rite, -u'l »■ . u r i /t. j :. 



_ ,. ' . . ,,■, Where invocate herfolemn made ? 

 Croucliing to gain the public choice. 



And fell it by their venal voice. Here be the maufoleum plac'd, 



Loit— to the world and future fame, I" t^his vaft vault, this filent vvafte ;— . 



Remembei'o only in a name, Yon mould'ring pillar, 'midil the gloom. 



Once In the courts of Europe known Finger of Time ! fliall point her tomb ; 



To claim a felf-dependent throne. While filence of the ev'niiig hour 



Thy ancient records torn, and toft Hangs o'er Glend4Ioch's ruin'd tow'r. 

 Upan the waves that beat thy coaft ; 



PKOCEEDINGS OF LEARNED SOCIETIES. 



ROYAL SOCIETY OF LONDON. 



HENRY Cavendish, Efq. a rueni- 

 ber of tliis l.arned body, has I'ub- 

 JT> tted tc. the fociety an " Abitiaft cf ob- 

 I'ervations on a diurnal variation of the 

 barometer between the Tiopics," by J. 

 HoR,3euR.GH, El'q. This genileman in 

 his voyage to the Eaft Indies employed 

 two marine baroineteis and a thermome- 

 ter, whicli were expofed to a free current 

 of air in a cabin, where the bafons of ihe 

 barometers weie thirteen feet above the 

 level of the fca. The hoiiis forobferva- 

 tion, were at noon, four and twelve, in 

 the afternoon, and at four and feven in 

 the morning, btcaufe the mercury in the 

 barometer had at thefe times been per- 

 ceived to be regularly ftationary between 

 the tropics. It was found that in fettied 

 weather in the Indi;m leas from eight a. ?n, 

 to noon, the mercury was not only Ifation- 

 ary but at the point of greatclt elevation. 

 After noon it began to fall, and continued 

 falling till four o'clock, when it was at 

 the low eft point of deprelTion. From four 

 to five the rnercury rofe, and continued 

 rifing till about nine or ten /. m., at 

 which time it had gained its highelf ele- 

 vation, and continued ftationary till mid- 

 night ; it then fell till about four o'clock 

 when it was a* low as it had been in the 

 preceding 'afternoon : Irom this time it 

 to^'t. till Jfven or eight and continued Oa- 

 tionary till noon. 



Tiius was the mercury fubje£l to a re- 

 gular elevation and deprcftion twice in 24 

 bouis in fettled %veatlier, and the loweft 

 ftation was about four oclcck in th« morn- 



ing and evening ; from thefe times fill 

 eight in the morning and nine in the even- 

 ing, it had a regular tendency to rile, when 

 it was ftationary till noon and midnight. 



In unfettled blowing weather, elpeci- 

 ally at Bombay during the rains, thefe 

 regular ebbings and Rowings of the mer- 

 cury Could not be perceived. The atrnoi- 

 phere fesms to produce a different effe6V 

 tn the barometer -iX. fea from what it doe^ 

 on jhore, as the following abftraft vv-ifl 

 fhew. From leaving the Land's End, the 

 mercury was flu(5\uating and irregular till 

 thty came to lat. a6°N. Ion. 20 W., it 

 then uniformly performed two elevations 

 and two deprelTions every 24. hours. 

 From lat. 20° N. to 10° N. the differ, 

 ence of the high and low (tations of the 

 meicuiy in the barometers was not Iq 

 great as it was from lat. 10° N. to 25° S. 

 Within thefe laft mentioned limits, the 

 ditTerenee of high and low ttations of the 

 mercury in the barometers was from 5 to 

 900 parts of an inch, both in the daily and 

 nightly motions. 



In lat. 28° S. the mercury was again 

 flufluating and continued fo till 27O S., 

 when it became fubjefl to the equatropi- 

 caJ motions, and continued fo till the ftiip 

 reached Bombay, Aug. 6th, 1S02. On 

 fhore for the lirft fix days, the mercury had 

 a fmall tendency towards pericrming thefe 

 motions, but from the 12th to the 22d of 

 Augiift they could not be perceived. On 

 leaving the harbour they were again very 

 perccpiib.e, and continued fo with great 

 uniformity till the arrival of the fliip in 

 Cantoa river, October 4th. It then bei 



cam^ 



