DETAILED ACCOUNT OF SOME RECENT EXPERIMENTS. 



45 



from the surface. The following list of strata is given in the " Indian 

 Engineering" of August 13th, 1887 : — 



Record oj a boring at Canning in the Sunderbunds. 



Number 



of 

 stratum. 



Thickness 



of 

 stratum. 



Depth 



below 



ground-level. 



Description of strata. 





Feet. 



Feet. 





1 



6 



6 



Black earth. 



2 



4 



10 



Light grey clay. 



3 



14 



24 



Dark grey clay. 



4 



10 



34 



Light grey clay. 



5 



21 



55 



Black clay, sandy. 



6 



7i 



126 



Grey sand full of salt water. (This is supposed 

 to be the same stratum of sand found at Diamond 

 Harbour under 28 feet when sinking a well in 

 1882 in connection with the proposed Docks.) 



7 



4 



130 



Dark grey clay. 



8 



5 



135 



Green clay with streaks of salt. 



9 



3 



13S 



Mottled clay, yellow and blue, mixed with broken 

 shingle. 



10 



2 



140 



Blue clay. 1 



11 



S 



145 



Yellow clay mixed with broken shingle. This 

 clay is not salt. 



12 



5 



150 



Yellow clay with bands of blue and ochre. 



13 



6 



156 



Light grey clay, very stiff, mottled with yellow. 



14 



10 



166 



Yellow clay, very loamy. 



15 



7 



«73 



Yellow earth. 



16 



87 



260 



Yellow micaceous sand ; contains perfectly fresh 

 water which rises to within 8 feet of the surface. 



1 There is a slight discrepancy between the description given in the text of the " Indian 

 Engineering " and the indications of a section appended to it : the strata 10 and 12 are mutually 

 transposed in the section. 



( 45 ) 



