APPENDIX No. 1. 



Meteorological Journal kept at Manzanilla Island, New Gran- 

 ada, Lat. 9° 21" north, Long! 79° 59" west, from Greenwich, 

 during the months of June, July, August and September, 1851, 

 By E. L. BERTHOUD, Civil Engineer. 



Method of Observation. — The force of the wind is estimat- 

 ed in numbers, being a calm, 1 a very light breeze, 2 a gentle 

 breeze, 3 a fresh breeze, 4 a strong wind, &c. The clearness of 

 the sky will also be marked in numbers, representing entire 

 cloudiness, 1 a slight degree of clearness, and so on till 10 entire 

 clearness. The force of the wind is put after the course — thus, 

 for example, if the wind is from the S. W. strong, it will be set 

 down S. W. 4. 



