INDEX. 



441 



protection against loss of w. 



by plants, 213 

 quantity of on earth, 110, 221 

 soft, 114 

 spouts, 144 

 vapor in air, 121 



forecast, 154 



maps, 154, 156, 157 



explanation of maps, 155, 

 158 



Weathering, 164, 187, 190 

 Winds, 137ff. 



Waste products, of plants, 216, Worms, 268 



221 



in food, 308 



in the body, 325, 340, 351, 



357, 359, 380 Yeast, 70 



Weather Bureau, 154, 155 



definition of, 149 Zoology, 1, 249ff. 



