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concealed within the substance of the creature, as in slugs, 

 cuttle-fish, and squids; or is altogether wanting, as in the 

 highly interesting nudibranchs, or naked-gilled molluscs. 

 These should be zealously and carefully collected and pre- 

 served in spirit : the small kinds in tubes or bottles of 

 corresponding size, and labelled as already directed. 



There are very many highly interesting molluscous animals 

 which are found floating on the surface of the sea. These 

 should be collected by means of a net consisting of a ring of 

 iron, or a strong wooden hoop of a barrel, having a bag about 

 eighteen or twenty inches deep, made of bunting. Three pieces 

 of cord, about twenty inches long, should be tied to the ring at 

 equal distance, and the ends tied together to a long line, with 

 which the whole should be towed from the boat or ship on the 

 water, so as to skim its surface. The net should be frequently 

 examined, and the captures, however minute, put into small 

 phials of spirit, and labelled with the date, and latitude and 

 longitude. 



Gulf- weed should be closely examined for specimens of these 

 floating molluscs, which are great prizes to conchologists.* 



CKUSTACEA. 



All Crustacea (lobsters, crabs, shrimps, &c.) are lest pre- 

 served in spirit, which, of course, immediately kills them. 

 Specimens too large for this method should have all the flesh 

 carefully removed. Access to it may be obtained by removing 

 or loosening the upper shell in crabs, in lobsters, cray-fish, 

 &c. ; an incision may be made for this purpose down the 

 middle of the under side. The claws must be taken off at the 

 joints to extract the flesh if it cannot be removed by cutting 

 through the integument on the inner side of the joints. If 

 taken off, they must be carefully replaced. The whole of the 



* Those persons who have the slightest inclination for studying shells should 

 possess themselves of a copy of Woodward's " Manual of Mollusca," published by 

 Weale, 59, High Holborn, London. Price 6s. Od. This most admirable book 

 is a library of itself upon the animals of which it treats. 



