^^ 



Sect XI.] 



ZOOLOGY. 



355 



usu 



in 



i 



v 



It* 



7 



J- 



], ' 



loured tentacles, may be preserved in the solution iNo. I. 



spirit. Those, however, as the Sei-puUdo^, 



¥ 

 *. 



colourles 



that form calcareous tubes, should be preserved in the 

 solution No. II. In all cases it is desirable that the 



specimens should be allowed to die gradually in the 

 water they inhabit, when they commonly display their 

 natural external form and appendages in a relaxed state ; 

 they should then be immediately put into the solution or 

 spirit to prevent putrefaction, which otherwise takes place 

 rapidly. 



CiRRiFEDiA (Barnacles and Acorn-sheUs or Crown-shells). 



The Barnacles or pedunculated Cirripeds, with soft 

 stalks, should be preserv^ed in the solution No. II. or in 



spirit; they are commonly attached to floating timber 



and the smaller species to seaweed, shells, &c. The 



sessile kinds (acorn-shells, &c.), which encrust tne coast- 

 rocks all over the world, and are found parasitic on 



turtles, whales, &c., should likewise be preserved in spirit 

 or solution No. II., as the included animal is necessary in 

 some genera for the 



recognition 



of the sDecies. 



colours of the pedunculated kinds should be noted whilst 

 fresh. If the sessile kinds are preserved dry the included 

 animal ought never to be taken out. In removing all the 

 kinds from their points of attachment care must be taken 

 that in some specimens, at least, the base, which is either 

 membranous or calcareous, be preserved. It is particu- 

 larly desirable that some young as well as large specimens 

 should be collected. In the tropical seas certain corals 

 and shells contain embedded in them singular forms of 



t 



