By Alfred C. Pass. 253 
which water stood in those shafts, at the end of the long dry season, 
before the rains commenced. 
Shaft No. 1.—19ft. to 20ft. deep. White alluvial clay with a 
large admixture of chalk rollings. In this shaft stags’ horns were 
found, and in no other. At the bottom the chalk rock showed 
traces of the original workers, the chalk being notched into steps, 
about a foot difference in level. The same kind of marks was found 
in shaft No. 8. 
Shaft No. 2.—21$ft. deep. White alluvial clay containing much 
chalk rubble, also some sarsen stones 10in. to L4in. diameter. In 
this shaft, at 6ft. under the surface, was found a brass coin of 
Marcus Aurelius. Water rose in this shaft 8ft. deep. 
No. 3.—383ft. only ! 
No. 4.—4ft. only ! 
A projecting mass of chalk for some reason has not been removed 
at this point. Was this left as a sloping access to the hill, for 
carrying the material during the erection ? 
No. 5.—154ft. This was the first shaft sunk. The first 3ft. to 
4ft. under the soil was white alluvial clay, then clay with a mixture 
of chalk rubble. At 9ft. under the surface a distinct black layer, 
about I1ft. thick, containing fractured flints, bones, burnt sarsen 
stones, and charcoal. Then, below this layer, 5ft. of alluvial clay 
and chalk rubble to the bottom. 
Shaft No. 6.—15ft. deep. This shaft, after the surface soil, 
passed only through a fine tenacious white clay, containing no 
chalk rubble. A few flints, flakes and broken flints, and some 
bones, were scattered through this clay. The bottom 9in. contained 
a large quantity of flint fragments. The absence of chalk rollings 
or rubble may be attributed to the great distance of this shaft from 
Silbury Hill. The white fine clay, when analysed, was found to 
consist of chalk 884%, insoluble silica 113%. 
No. 7.—Sunk at the extreme west limit of the meadow, was 
only 6ft. deep. White alluvial clay and chalk rubble. No bones 
were found in this shaft. 
No. 8.—16ft. deep. Upper half tenacious discoloured clay, not 
pure white; lower half white clay, containing some chalk rollings. 
