DWELLERS IN THE DUST 



O many of us the differences between a rep- 

 tile and a batrachian are unknown. Even if 

 we have learned that these interesting creatures are well 

 worth studying and that they possess few or none of the 

 unpleasant characteristics usually attributed to them, still 

 we are apt to speak of having seen a lizard in the water 

 at the pond's edge, or of having heard a reptile croaking 

 near the marsh. To avoid such mistakes, one need only 

 remember that reptiles are covered with scales and that 

 batrachians have smooth skins. 



Our walks will become more and more interesting as 

 we spread our interest over a wider field, not confining our 



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