SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL 68, NO. 1, PL. 12 



(Photograph by Chubbock.) 



(Photograph by T. G. Lemmon.) 



a. Ledge House in cleft of mushroom rock. ..„„,, D=,.ir 



b Tower in cedars near Sprucetree House, Mesa Verde National Park. 



