NOTE ON A SINK HOEE 
183 
Fig. 34. The ‘same sink in a still later stage. 
hole not only filled up with water, but became a spouting spring. 
A column of water several feet high and several inches in di- 
ameter was continuously forced up. The phenomenon was so 
unusual that its fame spread and people came from considerable 
distances to witness the novelty. Although the spouting was con- 
tinuous for three or four weeks the amount of water forced 
up varied and it was observed that there was a gradual decrease 
in the flow, until after the heavy spring rains the flow ceased 
and finally even the lakelet disappeared. Compare figures 32, 33 
and 34. 
That the water was not the immediate run-off was shown by 
the fact that the water forced up through the sink hole was clear 
and free from sediment. The phenomenon may have been due 
either to tile ditches connected with this particular sink hole, or 
a natural drainage to this particular joint or fissure. Sufficient 
underground drainage was directed to the joint to develop the 
hydrostatic pressure. 
Department of Geology, 
State Teachers College. 
