TJic Saccharoidal Sandstone. — Droadhead. 109 
series of sink holes. Througii the northern one-half of Lincoln 
and through Pike and Ralls it approximately follows a ridge 
about 12 miles from the Mississippi. At Westpoint the axis 
must be deep down, opposite Cap au Ores and on Sandy creek 
nearer the surface, and farther north it lies deeper. 
The last place where the Saccharoidal sandstone is seen in 
Missouri is at Jones', near the lines of Pike and Ralls, where 
the section shows : 
1. 6 feet of limestone. 
2. 16 feet of drab shaly limestone. 
3. 30 feet of First Magnesian limestone. 
4. 4 feet of Saccharoidal Sandstone. 
From Westpoint the sandstone is not seen again until we 
enter Wisconsin and Minnesota. At Minneapolis and St. Paul 
our Saccharoidal sandstone is the well known St. Peter's sand- 
stone. The First Magnesian seems not to be present here, but 
the Trenton rests directly on the sandstone. In southern Mis- 
souri sandstones often occur, and some have been referred to 
as the Saccharoidal sandstone, but the adjacent strata seem dif- 
ferent. 
At the Insane Asylum well at St. Louis the Saccharoidal 
sandstone was reached at a depth of 1462 feet, showing it to 
occupy the bottom of a basin of that depth whose outer rim 
appears at the surface 30 to 40 miles distant at Crystal city, 
Pacific, Augusta and Westpoint. The thickness in the well 
was found to be 133 feet, or about the same as that which I 
measured near Augusta upon the surface. From Augusta to 
Westpoint it is covered by 700 feet of more recent sediments, 
showing that between Augusta and Westpoint there is a de- 
pression or trough over 700 feet deep extending northwest. 
A mile below Augusta there formely stood out from the 
bluffs a pyramid of rock 40 feet high and 10 feet wide at the 
base — the upper part a few feet of limestone resting on sand- 
stone. This was separated from the bluffs by a few feet and 
on its top a small cedar grew, hence it was long known as 
Cedar hill, but the railroad builders have demolished it. A 
company now operates a quarry a mile below Augusta and 
they take out and ship off large quantities of the sand. Their 
place is now known as "Klondike." Specimens from this place 
show beautifully under a magnifying glass, sometimes a beau- 
tiful cross lamination is seen. 
