64 



FRBSH-WATEK AQUARIA 



plants. As the winter comes on, the parent plants decay, 

 leaving their buds and seeds to sink to the bottom, where they 

 remain dormant until the spring, then rising to the surface 

 and taking the place and functions of their predecessors of 



FiQ. 16. Water-soldiee, (Stratiotes aloides). 



the previous summer. One drawback to the presence of this 

 plant in an aquarium is that the snails are very fond of feeding 

 upon it, especially any of the Limnseidse ; and the Great 

 Water-beetle {SydropMluB piceus) is quite capable of doing con- 



