OBSERVATIONS OF INTENSITY. 
521 
Tas_eE I, 
Time of Vibration. 
Rio de Janeiro. ——____| Interval. Loss. Per Diem. 
Horizontal. Ay a Uippig 
Ss. Ss. Days 8. 
August 29, 1826... 545,2 537,0 i} 
September 15, 1827] 551,7 543,5 382 6,5 O17 
December 21, 1828 501,3 552,7 462 9,2 020 
June 1, 1830 .... 563,8 55544 527 2,7 "005 
TaBLeE II. 
| Time of Vibration. Intensity. 
At the Station. | At Rio, x 
Station. Date. Ey 
id ots 5 2 on Rio=1,000. T 
BRE | vce fee d 
orion ee eee zZ 
s. s. s. 
Madeira......+../1826 May 31 | 627,79) 430,1 | 536,6 | 1,556 S77) 
Port Praya...{ nez6 ae a 557,08] 465,4 |536,6 | 1,330 1,177 
St Catharina {1827 Nov. 3 |553,58/532,7 |544,5 | 1,045 0,920 
Gorriti a 1826 Oct. 29 549,44] 497,0 | 538,1 | 1,172 
and Nov. 6 ? } 1,175| 1,041 
wes eeeeee 1829 Jan. 10 |562,78)509,0 |552,8 11,1799 ”’ 2 
Monte Video |1827 Dec. 18 | 553,87|496,7 | 545,4 | 1,206 
mt souwevens 1828 Oct. 8 |560,95) 503,0 |551,3 | 1;201 ¢ 1,203] 1,065 
— seereeree 11830 June 1 | 564,89) 506,6 |555,4 | 1,202 
Sea Bear Bay |1829 Mar. 20 | 576,37) 446,0 | 553,1 | 1538 1,361 
9 rat { ried eae 584,29] 414,9 |539,4 | 1,691 
Cove .....- and 22 } 1,692] 1,498 
— sereeeeee | — Mar. 27 | 585,08) 415,4 |540,6 | 1,694) ” j 
Port Famine |1828 Jan. 28 | 589,36) 417,5 |546,2 | 1,712 
— seseeceee | — May 8 [596,54] 422,6 |548,2 | 1,683 
mesieiee Sh dune-46 595,81] 422,1 |549,3 | 1,694 > 1,700} 1,505 
Bue and July 30 ? ? perils aid ; 
— sereeeee (1830 April 26 | 598,97] 424,3 | 555.1 | 1,712 
Py 1829 Sept. 1 
Chiloe sessed andDes’ ie 565,23]453,7 (554.2 | 1,402 1,321 
Juan Fernandez}1830 Feb. 19 |551,83)464,7 |554,8 | 1,425 1,262 
Taleahuano 1829 Dec. 18 | 555,59! 466,5 |554,6 | 1,413 1,412| 1,250 
— sesseee (1830 May 12 | 557,18 467,4 1555.3 |1,412f 7 ? 
Valparaiso... |1829 Aug. 4 |545,59/479,5 |553,9 | 1,334) , 329} 1,176 
— ‘ 1830 Jan. rae 551,60] 482,1 |554,6 | 1,324 , wie 
eerecseee | and Feb. 1 oi, > > > 
