293 
Marsh , and its Relations to Evaporation , drY. 
frequent and regular readings. In consequence, the instruments were 
observed regularly every two hours, from 8 a.m. to 8 p.m. each day from 
July 31 to August 9. Moreover, it was thought desirable to see how 
Text-Fig. 6. Diagrammatic section through * Litter’ vegetation, showing stratification of 
aerial shoots and subterranean parts. The instruments (A, B and C) are in the positions used 
during the 1908 experiments. 
A. Angelica (2) 1 ; C. Carex (5) ; H. Hydrocotyle (1) ; J. Jiincus obtusijlorus (5) ; L. Lythrum 
(4); Lys. Lysimachia (4I ; O. Ophioglossum (1) ; P. Phragmites (4); Sc. Scabiosa Succisa (2); 
Sp. Spiraea (3), both flowering and non-flowering shoots; Sy. Symphytum . 
(August, 1908.) x T V- 
evaporation in vegetation of a more dwarf and less dense character would 
compare with the results obtained in 1907. Accordingly, the instruments 
1 The numbers in brackets refer to the ecological type of habit (see p. 277). 
