rOWKE] 



VARIETIES OF GROOVED AXES. 



67 



D. Same method of grooving; back is rounded, and may be in a 

 straight or curved line the entire length, or a broken line straight in 

 each direction from the groove. The type is illustrated by figure 35, 

 of granite, from Keokuk, Iowa. This specimen is unusually wide and 

 thin ; generally the outline.s are similar to those last described. 



Fia. 35 — Grooved as, .-iliowin^ rounded l»ack. 



-E. Grooved like the last; same general form, except that the back 

 is flat (figures 30, of sieuite, from Brown county, Ohio, and 37, of granite, 

 from Drew county, Arkansas). 



