Millions of people throughout the world have found many hours
of pleasure, adventure and education by collecting either rocks
or shells. 

This booklet won't tell you everything there is to know about
rocks and shells.  That would require many large volumes.  We only
want to arouse your curiosity about two delightful pastimes that
are so broad and varied that they can lead to a career or a
satisfying hobby. 

Shell Oil Company's interest in the subjects comes from its
history and the nature of its business.  The name--chosen by a
company that was founded years before anyone thought of drilling
for oil--comes from the seashells this company brought from the
Orient for use in mother-of-pearl items such as buttons and knife
handles. 

Now its world-famous emblem (the Pecten) is recognized by millions
of people in every walk of life.  It's on service stations, trucks,