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Air .Ministry, Crown Copyright Reservid 



Plate I. RocKALL lies over 200 miles west of the Outer Hebrides: a granitic rock 70 feet 

 high, it is an Atlantic resting-post for sea-birds rather than a breeding-place. Heavy- 

 seas wash over the top in bad weather. The shallow seas around are a rich feeding- 

 ground for tube-noses, auks and Gannets 



