MINDELEEF. } GROWTH OF MASHONGNAVI. 69 
of low rooms to what was originally an unbroken exterior wall, and 
which is still clearly traceable through these added rooms. Such an 
exterior wall is illustrated in Pl. xxvimt. This process continued until 
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Fiq. 12. Diagram showing growth of Mashongnavi. 
the last cluster nearly filled the available site and a wing was thrown 
out corresponding to a tongue or spur of the knoll upon which it was 
built. Naturally the westernmost or newer portions show more clearly 
