SALT WATER. 361 



A. Because the specific gravity of 

 salt water is greater than that of fresh, 

 and therefore it buoys up the swimmer 

 better. 



Q. Hmv do cooks ascertain if their BEINE be 

 SALT ENOUGH for pickling ? 



A. They put an egg into their brine. 

 If the egg sinks the brine is not strong 

 enough, if the egg floats it is. 



Q. Why will the EGG SINK if the brine be 

 NOT STRONG enoughfor pickling ? 



A. As an egg is heavier than water, 

 it will sink if immersed therein; but 

 if as much salt be added as the water 

 can dissolve, the egg will j#oa. 



Q. WHY will the EGG FLOAT in strong BRINE ? 



A. Because the specific gravity of 

 salt and water is greater than that of 

 water only. 



Q. Why do persons SINK in water when they 

 are UNSKILFUL SWIMMERS? 



A. 1st Because (in their flounder- 

 ing about) they take in water at their 

 nose and mouth, which makes them 

 heavier : 



2ndly FEAR contracts the body ; and 



i a 



