3Go 



of reindeer horn, the two others are carved out of the side 

 of nondescript bones. None of them are quite plane; they 

 have seemingly preserved the original bendings of the material 

 {reindeer antler?). 



They have on their upper surface elongated facets, evidently 

 the traces of the tool with which they were cut. Only in one 

 of them is there a faint trace of a ridge on the upper side; 

 the two others are quite flat. The edges of the sides, and 

 indeed even of the points, are blunt in all of them. 



Two of them have a little incision in the base — a circum- 

 stance which seems to indicate that the bone was driven with 

 some force into the socket at the end of the wooden shaft, in 

 order to drive it home. 



Similar arrow-points were discovered by Ryder in Scoresby 

 Sound M. Several of them have at the butt-end a conical tenon 

 or tang on the upper surface of which there are distinct 

 traces of screw-threads winding to the left, a feature which is 

 also found in old arrow-heads from West Greenland. In the 

 Riksmuseum at Stockholm there are seven arrows from East 

 Greenland (inv. Nathorst)^) with spiral screw -threads of this 

 kind about the tenon; one of these heads, which in other 

 respects closely resembles those discovered by Amdrup, is 

 22 cm in length, in one of the smaller heads (9 cm long) in 

 the same collection (inv. Nathorst), there is in the place of a 

 tang an incision in the base of the head similar to that in the 

 arrows of the Amdrup collection. Both in the Nationalmuseum 

 at Copenhagen and in the Riksmuseum (inv. Pfaff) at Stock- 

 holm, there are bone-arrows from West Greenland with screw- 

 threads on the tenon; and screw-threads are also known to be 

 found in other bone implements from West Greenland (cf. the 

 inventory of Pfaffs collection, sect. 29). Perhaps the uneven- 



*) Ryder 309—310, fig. 9. 

 *) stolpe. PI. V. 

 XXVIII. 24 



