ts center
| | |underneath the sea to the south of
| | |Catanduanes Island.
| | |

APPENDIX.

EARTHQUAKES IN THE MARIANAS ISLANDS.

----+--------------------+-----+------------------------------------------
No. | Date. |Intensity.
| | | Epicenter and effects.
----+--------------------+-----+------------------------------------------
| _Y. M. d. h. m._ | |
1 |1825 IV -- -- -- |VIII |Destructive earthquake in the Marinas or
| | |Ladrones group of islands. Ruined many
| | |buildings at Agana, Guam Island.
| | |
2 |1834 V -- -- -- |VIII |Destructive earthquake on Guam Island.
| | |Considerable havoc and great panic at
| | |Agana and in the other towns of the
| | |island.
| | |
3 |1849 I 25 14 56 | IX |Destructive earthquake. Laid in ruins all
| | |the masonry buildings on the islands--the
| | |church, _convento_, and college at Agana,
| | |the churches at Umata, Pago, and Agat,
| | |together with a great number of houses.
| | |Immense fissures opened in many places,
| | |and an extraordinary commotion of short
| | |duration was observed in the sea. There
| | |followed countless aftershocks, some of
| | |them very intense; from January 25 to
| | |March 11 no fewer than 150 were actually
| | |counted.
| | |
4 |1862 VII 1 7 48 | VII |Violent earthquake. Did great damage to
| | |the tile roofs at Agana and in other towns
| | |on the Island of Guam.
| | |
5 |1863 XII 7 3 -- | VI |Guam. Violent earthquake causing great
| | |alarm but little harm.
| | |
6 |1866 VI 24 13 -- | VI |Guam. Very strong earthquake.
| | |
7 |1870 V 13 15 27 | VI |Guam. Two very strong shocks at an