7G FISH CULTURE. 



CHAPTER III. 



ON THE TRANSPORT OF OVA AND FRY. 



I must here say a few words on the transport of 



ova and fry. I have previously pointed out the 



period when it is most advisable that the ova should 



be transported. The plan adopted at Huningue is 



certainly the best known. A box is selected, a thick 



layer of clamp moss placed on the bottom, a sort of 



bank or bolster of clamp moss is then laid on this 



around the sides, so as to leave a hollow in the 



centre. In this hollow a quantity of spawn is placed, 



sufficient of course to occupy it. The whole is then 



covered with another layer of damp moss. On this 



the same process can, if necessary, be repeated, 



until the box is filled. Instead of a cover, strips 



of wood are nailed across the top of the box, of an 



inch or two in width, leaving spaces of a similar 



width between to admit the air. This side, of course, 



is to be kept upwards. In this manner the ova travels 



safely for several days. I have already mentioned 



the best means of conveying the ova when only 



