FOSSIL VERTEBRATES 



91 



strips 2 to 4 inches in width and 1 to 3 feet in length and place 

 in a pail of water to soak. Next sprinkle plaster of paris slowly 

 and evenly into a pail half filled with water until the dry plaster 

 begins to rise above the surface of the water. Allow the plaster 



Fig. 48. — Second stage in removal of fossil skull. 



to settle slowly without much stirring, which will prevent lumps 

 from forming in the mixture. 



Wring out a burlap strip and immerse it in the fluid plaster, 

 taking care that both surfaces are fully covered. As the burlap 

 is removed strip off the excess plaster with the fingers of the 

 free hand. Apply the strip across the top and sides of the block 



