432 Mound-Making Auts of the Alleghentes. [July, 
inches in height. The mode of building the hills, which are 
honey-combed with regularly placed tubular galleries, is as fol- 
lows. The mason work was greatly stimulated by a shower of 
Fic. 2. Female. Fic. 3. Male. 
rain, and was indeed scarcely observed (beyond excavations of 
the underground galleries) before the rain-fall. 
building Galleries —1, Fig. 4 represents a covered way or gallery 
six inches long, which started on the foundation three or four 
inches below the surface of the field, and rose up toward the half- 
Pe 
Fic. 4.—Covered Galleries.—1, horizontal gallery; 2, vertical gallery. 
cone at an angle a little less than 45°. When first seen it was an 
open gallery or ditch, and was observed until it was entirely cov- 
