BOILING POINT 



85 



Other Things which Affect Boiling Point. Boiling point is 

 affected by the presence of impurities. If salt is added to water 

 it will boil at a higher temperature. Why does sea water boil at a 

 higher temperature than fresh water? 



The rise in temperature is usually in proportion to the amount 

 of impurity added. This is also true of sugar. Confectioners 

 determine the amount of sugar in their solutions by finding the 

 boiling point. 



Plain sugar 'syrups: Fahrenheit. 



For syrup, 11 pounds to the gal 219 



For fondant candies : 236 



For fudge and other candies of like nature 240 



For taffy and like hard candies to be pulled 300 



For clear brittle candies, peanut brittle, etc 310 



For almonds and walnut brittle. . .315 



The boiling point 

 of water is higher in 

 some dishes than in 

 others; for example, 

 when the water is boil- 

 ing at about 212 in a 

 copper dish, the boiling 

 point in a glass flask is 

 about 213. 



Wegener's "Profile of 

 the Atmosphere." * The 

 lowest dotted line (about 

 7 miles above the ground) 

 is "where the air stops 

 growing colder." It is the 

 upper limit of ordinary 

 clouds, of storms, and of 

 balloon ascensions by 

 human beings. Nearly all 

 the moisture of the at- 

 mosphere lies below this 



* Taken from the Scientific 

 American Reference Book. 



Geocoronium- 



Hydrogen- 

 sphere 



FlG 



Troposphere' 



66. Wegener's Profile of the Atmosphere. 



