What is above recommended will apply to almost all fishes.

LOBSTERS, CRABS, ETC.

In this class are included crabs, lobsters, and their congeners. These animals are all protected by a coriaceous covering, or shell, which is easily preserved, although there is considerable difficulty in preserving the colors of some species.

The flesh must be extracted from the large claws of lobsters and crabs by breaking the smallest possible piece from their points and introducing a small, crooked wire; in the smaller claws the flesh must be allowed to dry, and to facilitate this extremely small perforations should be made in opposite sides of the shell by means of a sharp, triangular awl, so as to allow the air to pass through it.

In lobsters the branchiæ and all the intestines must be cut away; the latter is effected by separating the body from the lower parts, and then extracting the internal parts with any sharp instrument; it should then be dried and cemented together, after being well anointed with the preservative. In crabs, the body, with all the limbs attached, is pulled separate from the back shell and the whole fleshy matter carefully picked out and preserving powder and the solution of corrosive sublimate applied to the different internal parts. In drying lobsters, crabs, etc., they should be exposed to a free current of air, but not to the sun’s rays, as it reddens the shells of crustaceous animals.

It need hardly be mentioned, that before applying the preservatives, the shells should be well washed with cold water.

The Hermit-Crab always takes possession of the shell of some turbinated Univalve as its domicile. These are easily preserved by pulling out the animal after it is dead. An incision is made in the soft tail of the animal, and the contents allowed to run off; it is then filled with cotton and imbued with the preservative; some cement is then put on the tail and the animal returned to its shell, which completes the operation of preserving.

In sending home crustaceous animals, the larger species should be emptied of their fleshy matter, which, however, is not necessary with the smaller species; they should be packed in middling-sized cases, and each wrapped in separate papers, with a thick bed of cotton or flax between each. In Lobsters, and the species which are allied to them, great care must be exercised in preserving the tentacula or feelers which emanate from their heads, as these become very brittle after they are dried. In proceeding to set up specimens which have been sent home, they should be immersed in cold water for some time, to give pliability to the tentacula and other parts, without which it will be impossible to set them up in any way without their breaking.

Mr. Bullock recommended that Crabs and all other crustaceous animals should be immersed in corrosive sublimate and water for an hour previous to their being put into attitudes.

When the joints become loose they are in general attached by glue, but the cement is much better.