TO KAMTSCIIATKA. 



185 



For such of my readers as are fond of the 

 sciences, I have added, at the conchision of my 

 first year's voyage, a table, containing the temper- 

 ature of the sea at different depths. I have made 

 the observations myself, with a good Six-thermo- 

 meter, and can answer for their accuracy. The-gra- 

 duation, both of the thermometer, and of the Six- 

 thermometer, is according to Fahrenheit. As these 

 observations can only be made in a perfect calm, 

 and that in a boat, so that the sea must also be 

 tranquil, they are among those which are the most 

 rarely made by navigators. 



