57 



cultured as a hobby, rather than for any specific purpose of utiliza- 

 tion so that as many as seven species are developed. Of all the 

 fish culture, that of varieties of gold fish requires the most minute 

 attention and elaborate process. In reference to shell culture we 

 observe that young shells are collected from their indigenous 

 places and are scattered over the surface of piscicultural grounds. 

 They require proper attention from time to time. The method 

 of collecting young shells in their indigenous grounds differs from 

 others in the case of oysters. The collection of young oysters 

 is made in this wise. Bundles of bamboo sticks and oak branch- 

 es and tiles are submerged at the bottom of the sea to which 

 young oysters are attached, afterwards they are separated in the 

 process of collection but in the case of other shells they are 

 taken right away from the bottom of the sea where they are 

 grown. The culture of mollusks and sea weeds is confined to 

 porphyra in Japan. 



The method adopted is characteristic of our country. Bund- 

 les of oak branches are set up in spatting grounds. It is so 

 arranged that the porphyra sticking on to these branches are 

 brought over to the cultural grounds. The culture of snapping 

 turtles, is also a method characteristic of Japan. The parent turtle 

 lays the eggs which are carefully protected and nourished after 

 hatching. Special skill is required for the bringing up of 

 young snapping turtle. Under the encouragement of the Fishery 

 Bureau, the culture of carp is recently carried on in rice paddy 

 fields by farmers as their bye products. The process helps the 

 growth of the rice plants and the increase of carp, so that the 

 result has been quite satisfactory since the receipts from the carp 

 which is a supplementary work reaches a considerable amount. 

 With regard to the artificial hatch ing of salmon and trout it may 



