3. _Liquor of Sir S. Smith._--This intelligent English naturalist, president of the Linnean Society of London, having turned his attention to the preservation of prepared objects, already classed in collections, has concluded that there cannot be a more efficacious means employed than the following liquor. ℞. Corrosive sublimate, 2 ʒ. Camphor, 2 ʒ. Spirits of wine, 1 ℔. {pint} In large animals it is applied by means of a sponge, which is passed at different times over the whole exterior of the animal, until it is perfectly impregnated, and the liquor has penetrated to the skin. In small animals a hair pencil is used, and the operation is performed in the same manner. Whether the individual submitted to this practice be recently prepared, or whether it has long remained in a collection, it must be permitted to dry perfectly before placing it in a cabinet. In France this dangerous composition is replaced by the preservative in very small quantities diluted with water. 4. _The bitter spirituous liquor_, recommended by other authors, is thus composed: ℞. White soap, 1 ℥. Camphor, 2 ℥. Colocynth, 2 ℥. Spirits of wine, 2 ℔. The whole is to be subjected to cold infusion for several days in a vessel hermetically sealed, frequently shaking the vessel during this interval, and allowed to strain through unglazed gray paper; when it is thought that the infusion is done, it must be put into bottles equally well corked, and used after the same manner as the preceding. 5. _Varnish_ is employed only on the naked skin of reptiles and fishes, to which it restores a portion of its splendour; it must be absolutely colourless, and perfectly transparent. In order to obtain it thus, it must be prepared by dissolving fine and new turpentine in spirits of wine, which must themselves possess the qualities above mentioned. It is to be applied with a pencil of squirrel’s tail, or the tail of a martin, and the object is left exposed to the air, sheltered from the dust, if it be wished to hasten its desiccation. _Liquors employed in Injections._ Injections are more generally employed for the preparation of the eggs of birds, for which it is desirable to secure a long preservation; although by a very bad method, they have also been used for the desiccation of very small animals. In order to decompose the flesh of a fœtus already formed in an egg, recourse is had to a strong solution of a fixed alkali, of soda, of tartar, or to ether. _Liquors, in which objects are preserved which do not admit of drying._