Plate III 



*■*> r 







.- ■ 



JT 



Fig. 7. Cross section of mud-dauber's nest showing the thickness of the walls 



and the relative position of the cells. Natural size. 

 Fig. 8. Nest of mud-dauber, showing the details of the architecture after the 



reenforcing layers of mud had been removed. Natural size. 

 Fig. 9. Cross section of nest. Slightly reduced. 

 Fig. 10. Longitudinal section of the mud-dauber's nest, showing the size of the 



cells and the thickness of the walls. Slightly reduced. 



