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THE POPULAR SCIENCE MONTHLY. 



stone hammers, of which many specimens have been found. 

 Sometimes hollows were cut or ground out in the hammering- 

 pebbles (Fig. 1), in order to secure a firmer grip for the fingers. 



The manner in which such a peb- 

 ble could be used for the work 

 was demonstrated to an English- 

 man some time ago by an Indian 

 arrow-maker in California. The 

 long and narrow barbs in the fine 

 arrow-heads (Fig. 2) and saw- 

 teeth (Fig. 3) were obtained 

 probably by the pressure of a 

 bone tool, such as is still used 

 by some American tribes. Holes 

 were bored, where needed, by 

 twirling a stick, hard pressed 

 upon, against the spot where the perforation was to be. It took a 

 long time, but primitive men had time. Most of the tools were 

 only chipped, while others were polished or ground. The grind- 

 stone was usually a suitable block of sandstone, or else a thick 

 piece of the same material. One of these pieces, which has been 

 worn down in the middle by use, is represented by Fig. 4. Handles, 

 if the instruments were provided with them, were inserted into 



Fig. 5.— Amber Bead. 



Fig. 6.— Bone Fish- 

 hook. 



Fig. 7.— Dolmen at Haga, on the Island or Orust. 



holes bored by the tedious process which we have mentioned, or 

 were attached in grooves by splitting the end of a stick and bind- 

 ing it around by cords. Clumsy implements these, even at the 

 best, but some beautiful works remain that were executed with 

 them ; and a Danish gentleman recently, for experiment, had 

 some trees felled and all the work necessary for building a small 



