458 
VOYAGE OF THE POTOMAC. [December, 
On tlie night of the great earthquake, as was afterward learned 
by letter, a volcano burst forth in Lucanas, which inundated the 
tops of the -mountains and the valley below with floods of boiling 
water. In the mountains del Cerro de la Sal, there were also im- 
mense effects produced by this volcano. Some days before the 
earthquake, there were heard subterranean sounds, like the 
lowing of immense herds of cattle ; which occasionally changed, 
and seemed like those resembling repeated discharges of heavy 
1746. 
Jan. 12. 
Shocks. 
Dec. 9. 
Quiet. 
13. 
Do. 
10. 
Two shocks. 
14. 
Do. 
11. 
Quiet. 
15. 
Do., and rainy. 
12. 
Violent shock. 
16. 
Three shocks. 
13. 
Two shocks— slight. 
17. 
Two shocks. 
14. 
Quiet, but rainy. ' 
18. 
Do., and heavy wind. 
15. 
Various shocks. Night very se- 
19. 
Quiet. 
rene. 
20. 
Shocks at early morning, but 
16, 17. 
Quiet. 
quiet day. 
18. 
Shock at night. 
21. 
One shock. 
19. 
Shock in the afternoon. 
22. 
Quiet, but gloomy air. 
20. 
Shocks early in the morning. 
, 23. 
Quiet. 
21. 
Three shoclcs. 
24. 
Slight shock. 
22. 
Two shocks. yr, /,,•:..>'' 
25. 
Do. 
23. 
One shock. 
26. 
Quiet. 
24. 
One shock. 
27. 
Shocks, with sounds of thunder. 
25. 
Three shocks. 
28. 
Shock. 
26. 
One shock. 
29. 
Quiet. 
27. 
One shock — night extremely 
30. 
Ten shocks. 
rainy. 
31. 
Two shocks. 
28. 
One shock. 
Feb. 1. 
Three shocks. 
30. 
Three shocks — two severe. 
3. 
Quiet. 
31. 
One shock. 
4. 
Shocks. 
1747. 
5. 
Shocks, with high wind. 
Jan. 1 . 
Quiet. 
6. 
Do. 
2. 
Shocks violent. 
7. 
Do. 
3. 
Shocks, and rainy. 
8. 
Quiet. 
4. 
Two shocks. 
9. 
Shocks, with tempest. 
5. 
Quiet, but heavy rains. 
10. 
Do. 
6. 
Shocks heavy. 
11. 
Do., with thick clouds. 
7. 
Do. do. 
12. 
Quiet. Public religious services. 
8. 
Shocks. 
13. 
Quiet. 
9. 
Do. 
^ 14. 
One slight shock. 
10. 
Do. 
15 
Quiet. 
11. 
Do. 
16 
Do. 
This Tabic gives to each month as follows : — 
Months. Days. Earthquakes. 
October 4 .220 
November 30 113 
December 31 40 
January 31 33 
February 16 24 
112 
430 
