24 
( Lastly, the chemist will have daily opportunities 
of experiencing its utility ; and the meteorologist, and 
the hydrographer, by the use of an accurate and stand- 
ard table of colours, will be enabled, in a much more 
satisfactory manner than heretofore, to describe the 
sides and meteors of different countries, and the nu- 
merous varieties of colour that occur in the waters of 
the ocean, of lakes and rivers." 
