ARITHMETIC 287 



Toys. Varieties of which color and markings are the 

 chief properties. 



Vent. The passage from the body. 



Veil. Applied to the head markings of the Nun. 



Wattle (beak). The fleshy excrescence on the beak. 



Whiskers. The feathers between the root of the beak 

 and the base of the eye. 



Whole Feather. A self-colored pigeon. 



ARITHMETIC 



MEASURES OF EXTENSION 



Measures of extension are used in measuring lengths (dis- 

 tances), surfaces (areas), and solids (volumes), and are 

 divided, accordingly, into linear measure, square measure, and 

 cubic measure. 



Linear measure has one dimension (length), square measure 

 has two dimensions (length and breadth), and cubic measure 

 has three dimensions (length, breadth, and thickness). 



LINEAR MEASURE 



12 inches (in.) =1 foot ft. 



3 feet =1 yard yd. 



5 yards - 1 rod rd. 



320 rods =1 mile ml. 



in. ft. yd. rd. mi. 



12 = 1 



