PLATE 9 



EXPLANATION OF FIGURES 



70 to 74 A series of five sections from specimen No. 257; all X 63. 



70 Taken through plane a to b, figure 3. 



71 Taken through plane c to d, figure 3. 



72 Taken through plane e to /, figure 3. 



73 Taken through plane g to h, figure 3. 



74 Taken through plane i to j, figure 3. 



678 



