The form of head seen in this dart appears to be the commonest. It is called by the same name, nû´tkăñ, as the bone head of the deer arrow. There is considerable variation in the number of barbs, which are always bilateral, except in one instance, No. 56590 [122], Fig. 196, from Utkiavwĭñ, which has four barbs on one side only. It is 7¼ inches long exclusive of the tang. Out of eight specimens of such heads one has one pair of barbs, one two pairs, two three pairs, one four unilateral barbs, one five pairs, one six pairs, and one seven pairs. The total length of these heads is from 9 inches to 1 foot, of which the tang makes about 2 inches, and they are generally made of walrus ivory, wherein they differ from the nugfit of the Greenlanders, which, since Crantz’s time[N315] has always had a head of iron. Iron is also used at Cumberland Gulf, as shown by the specimens in the National Museum. Fig. 197 represents a very ancient spearhead from Utkiavwĭñ, No. 89372 [760]. It is of compact whale’s bone, darkened with age and impregnated with oil. It is 8.7 inches long and the other end is beveled off into a wedge-shaped tang roughened with crosscuts on both faces, with a small hole for the end of a lashing as on the head of No. 89244 [1325]. This was called by the native who sold it the head of a seal spear, ă´kqlĭgûk, and it does bear some slight resemblance to the head of weapon used in Greenland and called by a similar name[N316] (agdligaḵ). The roughened tang, however, indicates that it was intended to be fixed permanently in the shaft, and this, taken in connection with its strong resemblance to the one-barbed head of the Greenland nugfit[N317] as well as to the head of the Siberian bird dart figured by Nordenskiöld[N318], makes it probable that it is really the form of bird dart head anciently used at Point Barrow. It is possible that this pattern has been so long out of use that the natives have forgotten what this old point was made for and supposed it to belong to a seal spear. [Footnote N315: History of Greenland, vol. 1, p. 148.] [Footnote N316: Crantz, vol. 1, p. 147, and Figs. 6 and 7, Pl. V.] [Footnote N317: Ibid., Fig. 8.] [Footnote N318: Vega, vol. 2, p. 105. Fig. 5.] One of the eight heads of the ordinary pattern in the collection, No. 56592 [284], a genuine one, old and dirty, is made of coarse-grained whale’s bone, an unusual material. No. 89373 [948], from Utkiavwĭñ, an ivory head of a good typical shape, has been figured (Fig. 198) to show a common style of ornamenting these heads. A narrow incised line, colored with red ocher, runs along the base of the barbs on each side for about three-fourths the length of the blade. These heads are sometimes secured by treenails as well as by a simple lashing, as is shown by the holes through the tang of this specimen. [Illustration: FIG. 198.--Point for bird dart. 1/3] [Illustration: FIG. 199.--Bird dart with double point. 1/5]