INDEX 



207 



Tufted fruits or seeds, 92. 



Tulip, flower, 70-72. 



Tumbler garden, 102. 



Typhoid fever due to bacteria, 145. 



Uses of plants, 127-132. 

 of forests, 132-137. 



Variation among plants, 114, Fig. 52. 



Variety, plant, 161, 170. 



Vegetable crop of N. Y. State, 122. 



Vegetable mold, 111. 



Veins of leaf, 55. 



Vinegar, preparation of, 145. 



Wall, of cell, 28, 29. 



of ovary, 72, 73. 



Water, composition and preparation, 

 10. 



test for, 20. 



Water, osmosis of, 33. 



given off from leaves, 59. 

 Webber, Dr. H. J., 120-122. 

 Wheat, 128. 



seedling, Fig. 46. 

 Window box, 102. 

 Wine, 129, 148. 

 Winged fruits, 91. 

 Wood, 46. 



Wood-cells, 43, 49, 63. 

 Woody bundles, 47, 50, Fig. 15. 



Yeast, 146-149, Fig. 74. 

 reproduction of, 146. 

 buds, 146. 



changes caused by, 147. 

 148. 



Zoology, definition, 4. 

 Zygospores of spirogyra, 168 



