50 



Observe night after $ hour, 1 hour. 2 hours, 3 hours, 6 hours, 9 

 hours, 12 hours, 24 hours, 36 hours, 48 hours, 3, 4, 5, 6, 7 and 8 days. 



Make a close comparison of the different tubes. 



Which shows the most rapid rise, 8 or 11? 6 or 7? Why? 



Plot the bights of the water of the different tubes at different 

 times? 



Why does loess show a greater and more rapid rise than clay? 



At the end of one hour which shows the greater rise, clay or 20 

 sand? Which at the end of a week? Why? 



What effect does organic matter have as shown in 2 and 3, 4 and 

 18, 7 and 16 and 12 and 17 and 19 to 24? 



What effect does size of particles have on rapidity of capillary 

 movement not taking bight into account? 



