174 PEACTICAL TAXIDEEMT. 



soap in 2 quarts of warm water. Add 3 pounds of arsenic, 

 1 ounce of fine corrosive sublimate, a lump of potash the 

 size of a walnut, and thicken with pipe-clay, to give the 

 preparation body. Heat, and stir well when cooling to 

 prevent the arsenic from settling. 



Pickle for Preserving Animal Skins. — Mix 2 pounds 

 of salt, 1 pound of alum, 2 ounces of saltpetre, 1 ounce 

 of corrosive sublimate, '/ 4 ounce of carbolic aid, in two 

 gallons of cold water. The acid may be omitted in cool 

 weather. When the flesh side of the skins begin to get 

 slimy, the pickle should be renewed or strengthened. 



Pickle for Preserving Crustaceans, Reptiles, and 

 Fislies. — Place specimens in air-tight jars or tanks in 

 liquid, composed of two parts alcohol, one part glyce- 

 rine, and one part water. 



Pichle for Beetles and Other Insects. — Mix 2 ounces of 

 water, 2 ounces of alcohol, J / a ounce of corrosive subli- 

 mate. The corrosive sublimate is not necessary unless the 

 specimens are to be mounted and exposed, in which case 

 it prevents the attacks of dermestes and other insects. 



Kalsomine for Tinting Cases. — Mix three parts of 

 Paris white and one part of powdered magnesia with 

 glue water. Stir in a little dry color, until the desired 

 shades are obtained, and thin with cold water. Chinese 

 vermilion, chrome yellow, and ultramarine have the best 

 effect. 



To Prepare 67fee.— Soak the glue in cold water until 

 soft and pliable. Pour off water, and melt the glue, plac- 

 ing the vessel in another containing water, and heat. It 

 will then be of the proper thickness for use. For molds, 

 the best white glue should be used, being as thick as it 

 will pour when hot. 



To Prepare Paste. — Make a soft dough of flour and 



