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clean sand. Six hundred feet of the trench passed threugh this formation 
and in this distance I saw quite a number of masses of sand embodied in 
the clay, forming ‘‘pockets” of sand in this clay deposit very similar to the 
“quicksand pockets” in the “blue clay” of South Bend. 
These masses of sand were compact, and as distinct from the clay as 
a boulder of granite or limestone would be, and their boundaries were 
almost as sharply defined. 
At the base of the clay there appeared what might be taken for sand 
pockets in different stages of formation. At one point there was a slight, 
but distinct upward curve in the clay, which was filled with sand, as at 
“a” of the following “section.” This might be taken as the beginning of a 
sand ‘pocket.’ At another point this was more pronounced, as at “b,” 
and may have been a sand pocket further developed; and at one point 
there was a mass of sand about one foot in diameter almost completely 
surrounded with clay, leaving a neck of only two or three inches of sand 
to connect it with the sand deposit below, as at ‘‘c.” 
SECTION OF SEWER TRENCH ON SECOND STREET, MISHAWAKA. 
SUPLACE OF STHELT. 
A—Surface soil, unstratified. t—Sand pocket further developed. 
B—Clay deposit containing sand “‘ pockets.’’ c—Sand pocket nearly coniplete. 
C—Sand, water laid. e,e,e and h—Sand pockets complete. 
a—Sand pocket beginning. 
At points where pockets were near the top of the clay there seemed a 
tendency to raise the clay above the level of the body of that deposit, 
asea tec ney’ 
Soon after the meeting of the Academy the excavation of the trench further east on the 
same street disclosed another clay deposit in which all the different phases of sand pockets 
were present and constituted a much larger percentage of the mass. 
