FIG. 52. Cam Long Down. A " Nab" or Outlier of the Cotswolds. 



(From a Photograph taken and kindly lent by Miss E. HENDRIKS.) 



FIG. 53. Escarpment of Otatari Limestone, Oamaru, New Zealand. 



(Front a Photograph taken and kindly Itnt by Mr. A. C. GIFFORD.) 



