COLUMBIAN HISTORICAL EXPOSITION AT MADRID. 



131 



and is still standing, but the improvement was not adopted. The houses are 

 usually well finished inside, are neatly washed with white clay, and are com 

 fortable habitations. The floors are occasionally made of flagging, but are 



.* 



Fig. 54. 

 CHIPPED STONE DAGGER WITH HANDLE. 



Gray flint Mound, Alabama. 



usually plastered with clay adobe. It is smooth and readily kept clean. The 

 roofs are constructed of cross rafters, filled in with willow brush. Light is 

 admitted through windows formerly made of plates of mica, for which glass, 

 when obtainable, is now substituted. The houses on the ground are usually 



Fig. 55. 

 STONE KNIVES IN WOODEN HANDLES. 



Hoopa Valley, California. 



closed, the entrance being through the upper stories, which are reached only by 

 means of ladders, as shown in the model. The terraces are favorite lounging 

 places for the inhabitants. The oval, dome-shaped structures close to the houses 



