Another Strange Horned Dinosaur 123 



28, and boring holes through steel and skull so 

 the bolts can be inserted to hold the crest secure- 

 ly to the crest. In the back ground is the inch 

 tube that holds the ends of the half ovals, and is 

 the standard that will support the skull, on the 

 permanent base. It all looks very simple, but it 

 represents a great deal of skilled labor. The strip 

 of half oval steel that supports the crest, was 

 heated hundreds of times and beaten to fit in- 

 equalities in the surface of the crest. It must 

 fit exactly, so there is no spring in the steel, 

 otherwise when the plaster jacket that covers the 

 top of the skull is removed, the spring will break 

 the bones. The jacket is made of separate sec- 

 tions fitted closely to the top of the skull. It 

 serves two purposes, that of giving a firm, uni- 

 form base behind the bones, so they may be clean- 

 ed, and also to enable us to turn the skull over 

 by looping a rope over it, fastening this to the 

 triplex block that rides on a trolley moving on 

 the eye-beams fastened to the ceiling. The skull 

 (Fig. 28), is then gently lifted, turned over, and 

 the upright set in the permanent base of polish- 

 ed mahogany. Then the jacket should lift off, as 

 in the case in hand. After cleaning the upper 

 surface, the skull is ready, as you see it, for per- 

 manent exhibition (Fig. 27), with the exception 

 that the glass case so necessary to protect it from 

 dust, and vandal fingers has not yet been put in 

 place. It took all four of us, many months to 

 complete this skull for exhibition. I worked 



