THE FJRESH-WATER AQUARIUM. 



57 



grasp a few, bat, overrcacliing himself, was precipitated 

 into the stream, and, as he sunk, exclaimed, " Vergiss 

 mich nicUP Hence the name. 



This closes our chapter on the fresh-water plants. We 

 should advise, when placing in the tank any one of those 

 plants which demand a fixedness in the earth at the bot- 

 tom, the following process : First make a ball of wet 

 clay ; with this ball inclose your roots. Deposit it in its 

 proper place, and then carefully surrounding it with your 

 sand or gravel, cover it with the weightier pebbles to 

 keep it down. The water, which it is better to put in 

 the tank by installments, and not all at once, will not then 

 disturb your river-garden arrangements. 



3* 



