This is very like the head of the weapon called _agligak_ (modern Greenlandic agdligak), figured by Crantz, and referred to above, except that the barbs are opposite each other. Mr. Lucien M. Turner tells me that it is precisely like the head of the dart used at Norton Sound for capturing the beluga. The native who sold this specimen called it “nuiă´kpai nû´tkoa,” “the point of a bird dart,” to which it does bear some resemblance, though the shape of the butt and the line holes indicate plainly that it was a _detachable_ dart head. Probably, as in the case of the ancient bird dart point, No. 89372 [760], referred to above, this weapon has been so long disused that the natives have forgotten what it was. The name ă´kqlĭgûk, evidently the same as the Greenlandic _agdligak_, is still in use, but was always applied to the old bone harpoon heads, which are, however, of the toggle-head pattern (described below). It seems as if the Point Barrow natives had forgotten all about the ă´kqlĭgûk except that it was a harpoon with a bone head for taking seals. At the present time the small bladder float, permanently attached to the shaft of the harpoon, is never used at Point Barrow. That it was used in ancient times is shown by our finding in one of the ruined houses in Utkiavwĭñ a very old broken nozzle for inflating one of these floats. Fig. 202, No. 89720 [756], is this specimen, which was picked up by Capt. Herendeen. This is a rounded tube of fossil ivory, 1.3 inches long and about one-half inch in diameter, slightly contracted toward one end and then expanded into a stout collar. At the other is a stout longitudinal flange, three-fourths inch long, perforated with an oblong slot. Between the flange and the collar the surface is roughened with crosscuts, and the other end is still choked with the remains of a wooden plug. This nozzle was inserted into a hole in the bladder as far as the flange and secured by tying the bladder above the collar. The whole was then secured to the shaft by a lashing through the slot, and could be inflated at pleasure and corked up with the wooden plug. [Illustration: FIG. 202.--Nozzle for bladder float.] [Illustration: FIG. 203.--Seal dart. 1/12]