A FROZEN WORLD 



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smeared. The really vital part of the plant at 

 each moment is, as a rule, the top or growing 

 shoot. Now, if the curled pond-weed were to let 

 itself get overtaken bodily by winter, and its top 

 branches or vigorous shoots frozen in the crust of 

 ice which must soon coat the pond, it would be all 



NO. 2. THE GREAT POND-SNAIL IN WINTER. 



up with it. To guard against this calamity, there- 

 fore, the plant has hit upon a dodge as clever in 

 its way as that of our old friend the soldanella, 

 which laid by fuel to melt the glacier ice in the 

 Alpine springtide. Prevention, says the curled 

 pond-weed, is better than cure. So, in No. 3, you 

 catch it in the very act of getting ready certain 



