52 AKT. 3. — B. KOTÔ : 



,. , iV^o. U welled out on Jimo 12th, 1780, at a distance of 



(Nos. 6.7,8) 1^500 TO. (over 14 cAo) in the direction E. 15^ N. from No. 5. 

 Nos. 7 and S. The fh'st rose on September 29th in the direction 

 8. 45°E. from No. 6, and the second (No. 8) near by on November 9th. 

 Afterward Nos. 7 and 8 united, and later No. 6 also coalesced with 

 them so that this compound island, resulting from amalgamation of the 

 component islets Nos. 7, 8 and G, is designated by the people No. 6. 

 This is Yebisu-jima (Nakano-shima), and is like Iwô-jima built up of 

 pumiceous andésite^ ^ clods, thinly covered Avitli pine, and fringed with a 

 shell-mixed sandy shore. This is the only islet that looks white from 

 the distance. A slight depression in the centre may be an indication of 

 a defimct vent (Y in Text-fig. 13). 



The islands Inoko-jima (Nos. 1-2), Iwô-jiraa (Nos. 3-4), 

 Sliin-jima (No. 5), and Yebisu-jima (Nos. (î-S) are called the New 

 Five Islands, tliongh in reality there are only four independent 

 islets."^ 



Nn-BAMA In passing, the writer may mention the islet of 



Hama-shima""^ (Nii-shima) off Kurokami village. See Geologic Map. 

 It is a mere lapilli bank, elliptical in form. It is said to have 

 been formed by submarine eruption during the An-ei activity. 

 The old lapilli accumulation is commingled with recent éjecta, in 

 which the writer picked up pieces of cordierite-bearing ones 



1) The rock is diül-grfiy wbite-i)ori)byritic porous bypersthene-amlesite with porous ground- 

 mass, built up of colorless glass with n, felt-work of augite-niicroHte and a little skeletal plagioclase. 



2) There is a shallow bank, 1 km. w-estward from Yébisu-jinia (Nos. 6-8). The writer 

 covild not find any description that corresponds in position to this shallow. This TJoro-shhnd 

 ('mud island') or Kani-shima (Fig. 11) is a submarine pumice bank of yello\\ish- brown color, 

 436 m. (4 clio) in circumference, which appears above water only during lo^\- tide. This may be 

 the phantom island, kno\\n only by traditition, which is said to have api^eared in the Tembio- 

 Hôji era (764 a.D.), and lately referred to as Ko-jima (pp. 2'J, 41). An old book says, according ti) 

 Yamaguclii, that an island appeared on October IS, 1781 at the west of the new islands only 

 for a few days. Again in June or July, 178C, another one rose at the west of the former and 

 soon disa])peared. The shallows to the f.outh of Doro-shima îire saiil to be the positions oE these 

 short-lived islands. 



