olG rKOCEKDrxcits ok the academy of [1890. 



capacity for work which requires special examination. Individu- 

 ally, I must confess, I have thus far failed to find a fragment of a 

 fact which supports the solution theory of lagoon-formation ; and 

 so long as the construction of the reef-lagoon remains unexplained, 

 so long must all theories explaining the formation of atolls be con- 

 sidered defective. 



