43 



chapel ; and in London of Mr. Highley, 74, Dean Street, 

 Soho.* 



As the special object in dredging is to procure specimens 

 from the sea-bottom, a quantity of mud and sand is often 

 brought up. A small brass sieve is therefore requisite, by 

 which to sift the minute specimens from the mud, &c., by 

 pouring water through the sieve. The specimens so obtained 

 may be put into small bottles of spirit and labelled with the 

 depth in fathoms from which obtained, nature of the sea 

 bottom, and lat. and long., as before directed. 



Where the sea-bed is covered with coral, large masses may 

 be detached by means of a strong drag-hook, and many living 

 creatures may be found sheltered and hiding between the 

 branches. These should be carefully extracted, put in bottles 

 of spirits, and labelled accordingly. 



Whenever opportunities occur of examining the sea-leach 

 and the shores of tidal rivers, they should be made the most 

 of. Proceeding thither as the tide goes out, and working 

 gradually clown to extreme low water-mark, a great variety of 

 specimens may be obtained which are not to be procured 

 either by trawling or dredging, as different depths of the sea 

 bottom have their own peculiar kinds of living creatures. All 

 stones and pieces of rock that it is possible to move should 

 be turned over, as creatures of all kinds either attach them- 

 selves to the under side, or bury in the sand or mud beneath. 

 Wherever there is any depression in the sand, &c., some 

 living creature is probably buried beneath ; but, as many of 

 them burrow very rapidly or already have deep holes excavated 

 into which to retreat on the first symptom of danger, con- 

 siderable dexterity and quickness are necessary to secure them. 



* It is difficult to give instructions for making a dredge without having a 

 wood-cut illustration to refer to. Those who may not be able to procure one 

 ready-made will find a good figure and description in Woodward's " Manual of 

 the Mollusca," (before referred to) at pages 428 and 429, together with other 

 information most useful to dredgers, and one or more dredges can always be seen 

 at the Liverpool Free Public Museum. 



