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NATURE S CRAFTSMEN 
spent a vacation pearl gathering near Macgregor, 
Iowa. It was quite a fad in those days. Get 
him to tell you all the ins and outs of the business. 
“ Large mussels will not live in an aquarium, 
Tommy, but if you could get hold of a few babies 
this winter, you might get a lot of amusement 
studying their habits. But you must be careful 
not to put them where the crayfish and water 
beetles can get at them. In the water as on the 
land the supreme rule of the little people is al¬ 
ways ‘ He lives longest who is strongest.’ ” 
