184 



MARKET DAIRYING 



From the above it will be seen that one degree Centi- 

 grade is equivalent to 9-5 degrees Fahrenheit. Hence 

 the following rules: 



1. To change C. into F. reading, multiply by 9-5 and 

 add 32. 



Example: 50°C = (50 x |) + 32 = 122°F. 



2. To change F. into C. reading, subtract 32 and 

 multiply by 5-9. 



Example: 182°F = (182 — 32) X f =83i°C. 



METRIC SYSTEM OP WEIGHTS AND MEASURES. 



This system was devised by the French people and has 

 very extensive application wherever -accuracy in weights 

 and measures is desired. Some of its equivalents in 

 ordinary weights and measures are given in the follow- 

 ing table: 



