BIRDS' NESTING SEASON 



149 



chamber that we examined, which was, we were told, a 

 fair type of all, was 14 feet long, 5 feet 6 inches 

 wide, and in the middle over 9 feet high. It was 

 entered from the court, in which was a square well 

 or tank (C), by a low door (L), little more than 3 feet 

 high, and less than 2| wide, and ventilated, not lighted, 



THE BROCH OF MOUSA GROUND-PLAN 



by a small square window (M) immediately over the 

 door. On one side of the chamber there was a long 

 narrow projecting stone shelf a foot or two from the 

 ground, and built into the thickness of the walls were 

 four or five neatly -shaped ' ambries,' or store cupboards. 

 If the fair mother of Harold of Orkney, a second 



