Bulletin of the Bureau of Fisheries . 1. EGG DEPOSITS OF TRIONYX COVERED WITH WIRE BASKETS. —ww»r ? A. 2. SECOND-YEAR YOUNG OF TRIONYX. Reduced 3V- CULTIVATION OF MARINE AND FRESH-WATER ANIMALS IN JAPAN. 265 which were laid in May or June, arc ready to hatch; and inasmuch as if small tor-toises that have just emerged from the eggs arc allowed to get into the parentspond* they are devoured by their unnatural fathers and mothers, a special arrange-ment has now to be put up to prevent this. Figure 1, plate ill. and the left side of theplan in cut 2 are intended to show this arrangement. Long plan
Bulletin of the Bureau of Fisheries . 1. EGG DEPOSITS OF TRIONYX COVERED WITH WIRE BASKETS. —ww»r ? A. 2. SECOND-YEAR YOUNG OF TRIONYX. Reduced 3V- CULTIVATION OF MARINE AND FRESH-WATER ANIMALS IN JAPAN. 265 which were laid in May or June, arc ready to hatch; and inasmuch as if small tor-toises that have just emerged from the eggs arc allowed to get into the parentspond* they are devoured by their unnatural fathers and mothers, a special arrange-ment has now to be put up to prevent this. Figure 1, plate ill. and the left side of theplan in cut 2 are intended to show this arrangement. Long planks about 8 inches u ideare put up lengthwise around the edge of the pond, leaving perhaps 1 footmarginbetween them and the water. Two successive planks are not placed contiguous, buta space of about 3 feet is left between every two, and closed by a bamboo screen putup in the shape of an arc of a circle, with its convexity toward the pond. Thus theslope or the bank where the eggs have been deposited is completely cut off from thepond itself. In the center of every pocket-like arched space made by a
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectfisheries, bookyear19
