298 
HAROLD’S DISCUSSIONS. 
Texan norther, 122; cyclones and 
anti-cyclones, 124; sirocco, 123; 
tornado, 132; solano, 123; sea- 
breezes, 123 ; change of winds in 
storms, 130; path of storm-center, 
130; extent of tornado, 134. 
Wood duck (see Animals). 
Yeast cells, 206; compressed yeast, 
207; germ food, 207. 
Yerkes Observatory, 137. 
Zenith, 140. 
Zones of plants due to environ¬ 
ment, 241. 
( 1 ) 
THE END. 
