[328]

22

March 29 /57/

With respect to cliff of 500 ft wearing 1 inch in century it is same to say that cliff 1 yard high wears back

(36/500 13.10 1 nearly 14 yard in century; ie 1 yard in little more than 7 years

  36

140  

   108

32  

  [illeg]

  38

  38

24       32/36

14) 100 (7.1—

    98

 2  

   12

 24  

   14

 1  

One yard in very little more than 7 years.

Mem. Whilst under sea no wear - very little when upraised. If we give to Wealden 300, we may really twice or thrice or more long - Mem in many parts cliffs are deserted - Now take one of lower Eocene Mollusca which has descendants, then will have been if annually given 600 million generations

Suppose it to change slowly - what a series - What chance of completing such a series.

[in margin:] Not quite same fallen wd be eaten from by wear

[328v]

1000 miles

1760 yards

 

1760 000 yards

36

10560000

5280000

63,360,000

Land during every Tertiary periods

Take level by chance - if too low or too high no action, -The 300 million must be multiplied many times