日本の古代の石器．石剣頭．この図版全図実寸．１．ありふれた種類．凍石．２，３．破損．凍石．４．前部に握りなし．蛇紋石．５．２図と同種．６．背面いっぱいにひれのような付属物，二カ所に穴．蛇紋石．７．破損．蛇紋石．８．背面にひれのような付属物はなく装飾あり/(Ancient stone implements of Japan. Sekikento or stone dagger-heads. natural size. 1. Very common kind. Steatite. 2, 3. Broken. Steatite. 4. Without a knob in front. Serpentine. 5. Similar to Fig. 2. 6. With the fin-like appendage, which runs along the ...)