INTRODUCTION. 



15 



That is to say, they make no improvement. But 

 man has been constantly altering his mode of 

 building, and, as we think, making improvements. 



ANOTHER SORT or HUTS. 



One kind of dwelling, in early use, was in 

 the shape of a dome. The frame was formed 

 of long sticks, which would bend easily. These 

 were sharpened at both ends, and then bent 

 and driven into the ground. Next, these frames 

 were thatched (that is, their roof covered) with 

 straw. After this they were plastered inside 

 and outside, with clay or earth, which soon be- 

 came dry and hard. A place was left for a door 

 or entrance, but not more than two or three feet 



