144 YEARBOOK, PUBLIC MUSEUM, MILWAUKEE [Vol. II. 



TENONS AND MORTICES 



The trilithons of the outer circle were each provided with "two 

 tenons worked on its apex, to bear the two Hntels or horizontal stones 

 which rested upon it." Figure 83 shows the construction of these 

 trilithons, with their tenons and mortices. Those of the Horseshoe 

 were provided with but one tenon each, as is shown in figure 84. While 

 many of these tenons have disappeared, a few of them have survived. 

 The tall single upright pillar in figure 79, shows one of these tenons 

 very plainly and vestiges of them are plainly visible in figure 80. Cor- 

 responding mortices were sunk into the lintels to admit the tenons. 



Fig. 85. — Flint axes used in dressing the stones used in 

 the building of Stonehenge. Drawing by the author. 



"The ends of the lintels of the outer circle were shaped so as to dove- 

 tail into one another, forming what is known as a toggle joint" and 

 thus keying the trilithons together. A plan of the lintels, with their 

 toggle joints, is shown in the upper part of figure 83. To this arrange- 

 ment is probably dvie the stability of Stonehenge today. 



ARTIFACTS FOUND AT STONEHENGE 



Stone mauls of the roughest type, weighing from half a pound to 

 more than sixty pounds have been found at Stonehenge. One of sev- 

 eral on exhibition in the Salisbury Museum, is said to weigh sixty-six 

 pounds. Many axes of flint, a common native product, have been re- 

 covered. These black flint axes are chipped to an edge on one side and 



