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244 Index.  
Wood chess ......................................... . ................. . ............. 70*  
Wood meadow-grass ............... . ................ . ............................ 103  
muhlenbergia ............................................................... 92  
reed-grass .......... . ........................................................ 73 —‘  
Woolly beard-grass ........ . ................. . .............. . ...... . .......... 80 v_  
Yard;grass .......................... . ......... .. .............................. . ....... 78, 114  
Yellow foxtail ..... . ............... . ............ . ....................... » ........... 89·  
0at·grass ...... . . . . ,..... . .................................................. 107    
Yuugbnuth, Karl ................................................................. 91, 97, 98~ dee- ¤  
Zea mays .......................... . .................................................. 109  
Zizauia aquatica . ......... . ................................ . .........., . .......... 110  
Zoellem E. W., mineral water ................................................ xxvii