360 MOSTLY MAMMALS 
shells were of no importance in the study of molluscs, and 
that attention must be restricted to the soft parts (the so- 
called “animal ”) alone. A wider grasp of the subject 
shows that nothing in Nature is unworthy of our best 
attention, and is sure to yield results of interest if only 
we approach the subject with unbiassed and unprejudiced 
minds. 
