127 



seedlings — about I^'ehumry i — samples were taken at intervals 

 of four to twelve days, thereafter at intervals of two to six days. 

 Since D. annua is small and has a poorly developed root system, 

 most of the soil samples were taken to a depth of from four to 

 six inches only. 



Table II shows the date, depth in inches, and per cent of water, 

 in terms of dry soil, of a series of such samples. 



Table II. 



Water Content of Soil Samples from the Habitat of Drosera 

 annua 





Depth in 



Per Cent 





Depth in 



Per Cent 



Date 



Inches 



Water 



Date 



Inches 



Water 



Dec. 6 



I to 6 



21.86 



Apr. 3 



I to 2 



8.50 



" 14 



I ' 



' 6 



22.86 



3 



I " 5 



8.86 



" 23 



I ' 



' 6 



26.47 



4 



I " 2 



7.83 



Jan. 3 



I ' 



' 6 



20.60 



4 



I " 5 



7-34 



" 14 



I ' 



' 6 



22.78 



6 



I " 5 



7.06 



" 18 



I ' 



' 6 



18.48 



6 



I " 2 



7.28 



" 18 



6 ' 



' 12 



19.68 



8 



1 " 5 



6.82 



" 18 



12 ' 



' 18 



21.00 



" 14 



I " 5 



7-37 



" 26 



I ' 



' 6 



15-63 



" 18 



I " 5 



7.26 



" 26 



6 ' 



' 12 



17.66 



" 20 



I " 5 



20.13 



" 30 



I ' 



' 6 



17.66 



22 



I " 5 



17-57 



" 30 



6 ' 



' 12 



22.00 



" 22 



I " 5 



16.75 



Feb. 4 



I ' 



' 6 



21.43 



" 22 



I " 5 



18.26 



4 



6 ' 



' 12 



21.41 



" 24 



I " 5 



25-63 



4 



12 ' 



' 18 



21.23 



" 27 



I " 5 



24.71 



" 10 



I ' 



' 6 



17-60 



" 28 



I " 5 



22.59 



12 



I ' 



' 6 



14.63 



" 29 



I " 5 



18.48 



12 



6 ' 



' 12 



22.46 



May I 



I " 5 



19-23 



" 17 



I ' 



' 5 



17-53 



2 



I " 5 



19.17 



" 21 



I ' 



' 5 



16.45 



5 



I " 5 



18.87 



Mar. 2 



I ' 



' 5 



16.25 



7 



I " 5 



20.06 



3 



I ' 



' 5 



20.36 



8 



I " 5 



18.55 



6 



I ' 



' 5 



19.66 



9 



I " 5 



19.40 



9 



I ' 



' 5 



17-52 



II 



I " 5 



17-38 



" 13 



I ' 



' 5 



15-13 



12 



I " 5 



17-77 



" 14 



I ' 



' 5 



17.42 



" 13 



I " 5 



18.82 



22 



I ' 



' 5 



19.87 



" 15 



I " 5 



14-75 



" 24 



I ' 



' 5 



6.80 



" 19 



I " 5 



10.55 



" 25 



I ' 



' 5 



7-15 



" 22 



I " 5 



7.80 



" 26 



I ' 



' 5 



8.12 



" 23 



I 'J 5 



6.40 



" 28 



I ' 



' 5 



6.52 



" 23 



I " 5 



6.70 



" 30 



I ' 



' 5 



7-38 



" 27 



I " 5 



5-72 



" 30 



I ' 



' 2 



6.47 



" 29 



I " 4 



5-12 



" 30 



I " 2 



3-46 



" 30 



I " 5 



5-77 



Fig. I shows a graph of the water content for the period of 

 observation. Fig. 2 gives the rainfall in inches for the same 

 period, as reported by the Experiment Station. The rainfall 

 for three years divided into two periods each is shown in Table 



