78 



Mr. PETEIE'S Inquiry into the Origin and 



second, in part on the same line, but diverging in a semicircle through the 

 point c to show the course of the gallery : 



The cuts which follow will afford an example of a Nuraghe of the simplest 

 form, that is, without a plinth and external cones, and exhibit the usual 

 construction of the window c and doorway a in those structures generally. The 

 elevation represents the Nuraghe Nieddu, near Ploaghe, which is constructed 

 of volcanic rocks of the neighbourhood; and the ground plan shows its internal 

 arrangement : 



It will be observed, as a peculiarity in this specimen, that the gallery which 

 affords a communication between the lower and upper chambers does not rise, 

 as in the former example, from the first chamber, but commences immediately 

 within the external doorway a by an ascent to the left. This Nuraghe is about 

 twenty-eight feet in diameter, and, in its present state, about twenty-five feet in 

 height. 



That in the style of masonry observable in these ancient sepulchres, for 



