t)0 



The hatching implement used in Japan is mostly that of Mr. 

 Atkins. 



(3) The Drawing of the Culture of Ark-shell and Specimens 

 of Arc-shell and their Enemies Exhibited by the Kojima 



Arc-shell Culture Joint Co., Okayama Prefecture. 



The culture of Arc-shell is practiced in the Gulf^ of Kojima, 

 Okayama Prefecture. The area covered by the culture ground 

 in 1907 was 781 areas with an output of 4,612,024 lbs. valued 

 at 44,794 yen. The Kojima gulf has a muddy bottom in many 

 places and during the ebb tide the bed is not only exposed but 

 with the pouring in of rivers of various sizes both fresh and salt 

 water are mixed to a harmonious degree so that not only Arc- 

 shell but short-razor-clams, mollusks and oysters are cultured so 

 that the whole bay is now utilized for this purpose. 



The Kojima Joint Stock Company, (located at the Hachihama- 

 machi, Kojima County, Okayama Prefecture) was established in 

 1894 commanding a capital of over 90,000 yen the number of 

 the people who subscribed tovv^ards the capital is 127. The 

 company is engaged in the culture of Arc-shell and short-razor- 

 ■clams, which are sold in both China and Japan. The net profit 

 per year fluctuates between 40 and 80 ^. The shell culture is 

 ■carried on by the characteristic method of the company like the 

 seed sowii-^ and cultivation of paddy fields, while shells export- 

 able to China are cultured up to the third year and those for 

 Japan up to the fourth year. Within recent years the business 

 has become greatly extended, so that land of a promising nature 

 along the Korean coast is leased and explored with favourable 

 results. For particulars ' a reference is made to drawings and 

 samples exhibited in the present exhibition. 



(4) The Model of the Pearl Cultural Ground and the 



