22 ADVANTAGE AND DISADVANTAGE OF SALTS. 



by them to other regions, and are deposited on 

 flat beaches, far from their native cliffs. 



FORMATION O* 1 ICEBERGS. 



The saltness of the sea rendering it more dense, 

 necessarily renders it more buoyant, than fresh 

 water. This is obviously a great advantage to 

 man in the matter of commerce. A ship does not 

 sink so deep in the sea as it does in a fresh-water 

 lake ; hence it can carry more cargo with greater 

 facility. It is easier to swim in salt than in fresh 

 water. 



The only disadvantage to commerce in the salt- 

 ness of the sea is the consequent unfitness of its 

 water for drinking. Many and harrowing are the 



