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ordinal succession in both directions. In the latter each large scale first 

 fragments into a number of irregular, smaller ones, and these then 

 gradually diminish until they vanish altogether, and a clear interval 

 separates the middle and the distal series (Fig. 8). Thus we have the 



Fig. 8. Series showing the various stages in reduction of the scales on the large third toe. 

 In the three upper a gradual narrowing is seen over the first joint ; but no change over 

 the second ; in the three lower the scales over the first joint gradually disappear, 

 while those over the second joint undergo fragmentation and then disappear. 



