STATE GEOLOGIST. 109 
Hunt Sampler.—One sampler* offered on the market is that manu- 
factured by Robert G. Hunt & Co., Chicago, Ill. It is a piece of steel 
tube about 18 inches long, slit longitudinally. The end entering the marl 
is capped and pointed with steel so that it will penetrate more easily. To 
the other end there is attached a longer or shorter rod, which can be 
turned by means of a handle. The two edges running lengthwise are 
sharp, so as to cut the marl. When the tool has been forced down to 
the depth desired it is turned half around, filling it with a clean swath 
of marl its whole length. Thus a perfect sample of the marl through- 
out the length of the sampler is obtained. 
a OS 
=-— 
-- 
Cross Section 
1%'' Pipe 
ind 
, cork 
GS 72---—-------------—----»5 3/8 
po ee cee Sai yf 
SN 
gon ee S, 
Coes, La, lag 
ox 4 
Fig. 9. The Hunt sampler. 
Liquid Marl Sampler.—lor marls almost in the liquid state the 
Geological Survey of Michigan used a modification of the Farr marl 
sampler. 
1. 4 PIPE 
Ue pee ee PPL ET ee 
! 
Fig. 10. The Farr liquid marl sampler. 
The construction of this tool is readily understood from the diagram 
and it is used as follows: 
The plug is first held firmly against the mouth of the pipe by means 
of the rod and the whole tool shoved down the desired length. Now 
the pipe is raised, holding the rod stationary, and is then shoved down 
to its former level, being forced tight against the shoulder of the plug. 
Both are now raised to the surface, the rod and plug removed and. the 
sample taken from the pipe. A good sample can in this way be taken 
down to a depth of 18 feet. In order to cause the pipe to be forced 
down with greater ease it is best to sharpen the bottom edge. 
*Geological Survey of Michigan, Vol. VIII, Part III, page 12. 
Marland Its Applicalion to the Manufacture of Portland Cement, D. J. Hale and Others. 
