72 THE NATURALIST'S GUIDE. 



should be added until it dies, when the water will cease- 

 flowing. It should then be removed from this solution 

 and placed in strong alcohol, where it must be kept 

 permanently. 



Corals — which generally grow at some distance from 

 the shore, and sometimes in deep water — should be se- 

 cured with nets. They must first be washed in fresh water, 

 then dried in the shade. It is also desirable to preserve 

 specimens in alcohol. 



Sea-Anemones are found attached to the rocks or buried 

 in the mud; they should be plunged in strong alcohol 

 when fully expanded, but the alcohol should afterwards be 

 changed, as they give out large quantities of water. 



Hydroids and Bryozoa. — Incrustations on the rocks, sea- 

 weeds, and delicate tufts found growing on rocks, etc., 

 are called by these names. They may be dried or pre- 

 served in alcohol like the Corals. 



Star-Fishes may be found among the rocks at low tide. 

 They should be killed by immersing in alcohol or fresh 

 water. Some species should be preserved in alcohol, where- 

 they should be placed in as natural attitudes as possi- 

 ble, as when they become rigid it is impossible to alter 

 the position of the arms. They may be dried in the 

 shade by placing them in natural positions upon a board. 

 When dead, they should be dried instantly, as they will 

 decompose in a few hours if kept in a damp place. 



Sea-Urchins may be taken in rocky pools at low water. 

 They may also be found under the sand on beaches, from 

 which they are frequently washed by the waves. They may 

 be preserved in alcohol, or dried like the Star-Fishes. 



Holothurias, or Sea-Cucumbers, are found on flats or 

 under stones. They must be preserved in alcohol. 



Sponges and Seaweeds should be dried in a draught. Very 

 pretty ornaments are made of the sea-mosses by washing 

 them in fresh water, and spreading upon dampened paper 



