613 



Transean, E. N. 



'08. The relation of plant societies to evaporation. Bot. Gaz. 45; 

 217-231. 



Warming, E. 



'09. Oecology of plants. 



Wilson, M. 



'11. Plant distribution in the woods of N. E. Kent. i. Ann. 

 Botany 25 : 857-902. 



Woodhead, T. W. 



'06. Oecology of woodland plants in the neighborhood of liud- 

 dersfield. Journ. Linn. Soc. 37:333-406. 



Yapp, R. H. 



'08. Sketches of vegetation at lionie and abroad. IV. Wicken 

 Fen. New PhytoL 7:61-81. 



'09. On stratification in the vegetation of a marsh, and its ref- 

 lations to evaporation and temperature. Ann. Botany 23 : 

 275-320. 



EXPLANATION OF PLATES 



Pl.\te LXXXVI 

 Fig. I. Map of Skokie Marsh; tlie dotted line represents Skokie Stream. 



Plate LXXXVII 



Fig. 2. Skokie Stream at point west of Braeside, looking north. July, iqii. 

 Fig. 3. Skokie Stream at point west of Glencoe, looking south. July, 191 1. 



Plate LXXXVIII 



Fig. 4. Average daily evaporation rates in (a) center of reed swamp, (b) outer 

 part of reed swamp, (c) swamp meadow, and (d) forest. 



Fig. 5. Average daily evaporation rates among Phrag}iiitcs coiuiiniiiis: at a, 

 o cm. ; at b. 25 cm. ; at c, 107 cm. ; and at d, 198 cm. 



iMg. 6. Average daily evaporation rates among Typha latifoUa: at a, o cm.; 

 at /', 25 cm.; at c 107 cm.; and at d, 175 cm. 



Plate LXXXIX 



Fig. 7. a, Sparqaniiun ciirycarpum : b. SaiiUtaria latifolia: c. Polygontiin Mtthlen- 



bergii. July, 191 1. 

 Fig. 8. Phragiititcs coiiniiiiuis. July, 191 1. 



