METEOROLOGY. 



Meteorology being considered of much importance by the scientific world, great 

 attention was paid to this interesting department, wliicli was undertaken by Mr. Thom, 

 whose duty led him to be more constantly on board the ship : the excellent form of a 

 register invented and given to me by Captain Beaufort was adopted, and the men were 

 severally instructed to read off' the degrees shown by Fahrenheit's thermometer, which 

 was placed on the ice, in a canvas tent, at a convenient distance from the ship. Its 

 altitude was registered every hour, and at the same time the direction and force of the 

 wind, and the state of the weather, in a manner which will be manifest in the following 

 table, to which directions are prefixed. The first column in the table is the day of 

 the month ; the second column is the direction of the wind ; the third column is the 

 force of the wind, denoted by figures in the following manner: 



0. Calm. 



1. Light air, or just sufficient to give steerage way. 



2. Light breeze 



3. Gentle breeze 



or that in which a man-of-war with 



y all sail set, and clean full, would < 3 to 4 knots. 



I 



4. Moderate breeze j go in smooth water. 



5. Fresh breeze 



1 to 2 knots. 



6. Strong breeze 



7. Moderate gale 



8. Fresh gale 



9. Strong gale 



or that which a well-conditioned 

 man of war could carry in chase 

 ■full and by. 



J 



5 to 6 knots. 

 'Royals. 



f Single-reefed topsails, 



I. and topgallant sails. 



Double-reefed topsails. 



Triple-reefed topsails. 



f Close-reefed topsails, 

 - 1 and courses. 



10. A whole gale, or that which scarcely could bear the close-reefed main topsail and 



foresail. 



1 1. A storm, or that which would reduce her to storm staysails. 



12. A hurricane, or that which no canvas could withstand. 



a 2 ? 



