Table of Contents 



XXVI. Pool, R. J. Vegetation of the sandhills of Ne- 

 braska. 

 XXVII. Pool, R. J. Vegetation of the sandhills of Ne- 

 braska. 

 XXVIII. Pool, R. J. Vegetation of the sandhills of Ne- 

 braska. 

 XXIX. Pool, R. J. Prunus besseyi and Ipomoea lepto- 

 phylla. 

 XXX. Pool, R. J. Vegetation of the sandhills of Ne- 

 braska. 

 XXXI. Pool, R. J. Meter quadrat in a blow-out. 

 XXXIl. Pool, R. J. Phaca longifolia and Pentstemon hay- 

 deni. 



XXXIII. Pool, R. J. Vegetation of the sandhills of Ne- 



braska. 



XXXIV. Pool, R. J. \'egetation of the sandhills of Ne- 



braska. 

 XXXV. Pool, R. J. Vegetation of the sandhills of Ne- 

 braska. 

 XXXVI. Pool, R. J. \'egetation of the sandhills of Ne- 

 braska. 

 XXXVII. Pool, R. J. Vegetation of the sandhills of Ne- 

 braska. 

 XXXVIII. Pool, R. J. Vegetation of the sandhills of Ne- 

 braska. 

 XXXIX. Pool, R. J. Vegetation of the sandhills of Ne- 

 braska. 

 XL. Pool, R. J. Vegetation of the sandhills of Ne- 

 braska. 

 XLI. Weaver, J. E. Batteries of wheat, rye and cockle- 

 burs. Fig. 2. Infected rye leaves. 

 XLII. Weaver, J. E. Infected wheat leaves. 

 XLIII. Folsom, D. Morphology of Yucca glauca. 

 XLIV. Folsom, D. Morphology of Yucca glauca. 

 XLV. Folsom, D. Morphology of Yucca glauca. 

 XLVI. Folsom, D. Morphology of Yucca glauca. 

 XLVII. Bergman, H. F. Malva parviflora, Malva borealis. 

 XL VIII. Bergman, H. F. ..Malva borealis, Malva parviflora. 

 and Malva rotundifolia. 

 XLIX. Rosendahl, C. O. Pollen from species of Betula. 



IX 



