57 
Museum Bulletin No. 25. 
Plate I. 
A. Ripple-mark on a sand dune near Wellington, Ont. 
B. Ripple-mark and wind excavation around a stump on sand dune near 
Wellington, Ont. 
C. Margin of an adyancing dune showing sand at angle of rest; the house 
is now (April, 1916) partially buried; photo taken July 9, 1914; 
Sand Bank, Ont. 
(Pages 8, 9.) 
