204 SPORT IN NORWAY. 
than that of the moss. Moreover, it is only necessary to 
sprinkle the topmost layer of moss, as the moisture will 
gradually percolate through the contents of the box. 
Neither should too much water be sprinkled on at one 
time, lest the ova at the bottom of the box should 
be immersed. ‘To obviate this contingency it is best to 
turn the box over once at least in the course of the day. 
In packing the box the bottom should first be evenly 
covered with a thick layer of the moss, which should be 
previously washed quite clean. On this a layer of eggs 
should be evenly spread, then should come a thinner 
layer of moss than before, and so on, alternate layers of 
egos and moss, till the box is nearly full. On the top 
of all a layer of moss of the same thickness as the first 
should be laid, so that when the lid is fastened down 
the whole shall form a compact mass, and all shifting 
of the contents be rendered impossible. ‘The elasticity 
of the moss will prevent the slightest danger from 
pressure accruing to the ova. If the weather is ex- 
tremely severe the box should be protected. It may be 
remarked that ova should not be transported till the 
eyes of the embryo are visible. 
A few precautions are necessary on unpacking such a 
box containing ova. The temperature of the box, and 
of the water in the hatching-case, must be compared 
with a thermometer. Supposing that of the former to 
be the greater, the moss should be gradually sprinkled 
