264 



TAXIDERMY AND ZOOLOGICAL COLLECTING. 



4. Mix with this red water one and one-half gills of plaster 

 Paris, stir it up thoroughly to get it well mixed and free from 

 air-bubbles, then with a teaspoon distribute it all over the hand 

 until it is completely covered with a coat of the pink plaster 

 about one-eighth of an inch thick. 



5. After this thin coat has hardened, anoint the surface of it 

 with lard oil or clay water, so that the plaster which is to be put 

 upon it will not stick to it, but separate readily when the outer 

 case of the mould is chiseled off. 



6. Take one and one-half gills of water, and three-quarters of 

 a pint of plaster, mix for outer case of mould, and apply on top 

 of the pink lining to a thickness of about half an inch. Let 

 this get perfectly hard. (Fig. 64.) 



7. Take the subject out of the sand. Turn it over, anoint the 

 edge of the mould with clay water or lard oil, and treat the 

 other side in precisely the same manner. This is the course 

 when the whole object is to be cast. If half the object is suffi- 

 cient, as is the case in taking a record cast of one side of an ani- 

 mal's head and body, then take the subject from the mould, 

 and 



8. Wash the inside of the mould thoroughly to get out the 

 clay and sand. 



9. Anoint the inside of the mould with clay water, thin clay, 



or lard oil, and 

 lay it in position 

 t o receive the 

 plaster. 



10. Mix a prop- 

 er quantity of 

 plaster, pour it 

 into the mould 

 and let it harden. 

 Lay the mould 

 (with the cast in- 

 side) on a cush- 

 ion, or on your lap ; take a half -inch chisel and a light mallet, 

 and, beginning at the end nearest your left hand, chisel away 

 the case of the mould, bit by bit, until you come down to the 

 pink lining coat, which shows that you are close to the cast. 



Fia. 64. Second Step in Making a Waste Mould. 



