310 CONCLUSION. 
basis of anatomical accuracy. We anticipate, however, the additions to 
our knowledge which the past seems to presage ; the time may come when 
the habits and organic structure of the Mollusca will be as familiar as the 
anatomy of our own species, and the nature and animal affinities of their 
shells understood by every lover of Conchology without recourse to forced 
and dangerous trains of analogical reasoning. Much remains to be done: 
in the precious depositories of Nature, as says our pious forefather Ray, 
‘‘is employment enough for the vastest parts, the most indefatigable 
industries, the happiest opportunities, the most prolix and undisturbed 
vacancies.” 
