jf>4UT 2.] Appendix I. 141 
Table of Creological Strata of the Artesian Well bored in the Jardin d'Acclimatation 
at Pondicherry —contd. 
Number of 
Strata. 
Dates. 
i 
Geological Strata. 
Thicknesses 
of Strata. 
Progressive 
Depths. 
j 
M. 
M. 
16 i 16th, 18th „ „ ' 
Fine sand and decayed wood.., 
1-58 
13-60 
17 
18th, 19fch, 20tli, nnd 
21st Nov. 1878. 
Fine pure sand ... 
2-20 
15-80 
18 
21st, 22na, 23i-d 
November 1878. 
Close black clay with vegetable 
detritus. 
5'40 
21-20 
19 
23ra, 25th, and 26th 
November 1878. 
Bhick clay mixed with fine and 
moderate sized sand. 
2'90 
24-10 
20 
26 th November 1878 
Black clay mixed with sand and 
small gravel. 
0-20 
24-30 
21 
26th and 27th Nov. 
1878. 
Black clay mixed with moderate 
sized sand. 
2-80 
27-10 
22 
27th November 1878 
Fine sand stained with clay ... 
0-20 
27-30 
23 
27th and 28th Nov. 
1878. 
Fine grayish sand ... 
1-10 
28-40 
24 
28th November 1878 
Hard black clay mixed with 
very fine sand. 
0-15 
28-55 
25 
28th and 29th Nov. 
1878. 
Moderate sized grayi.sh sand ... 
215 
30-70 
26 
23th November 1878 
Black sandy clay ... 
0-15 
30-85 
27 
29th „ „ 
Fine gray sand ... ... 
0‘55 
31-40 
28 
30tli „ ,, 
Black sandy clay ... 
1-20 
32-60 
29 
30th „ ,, 
Fine sand mixed with clay ... 
0-40 
33-00 
30 
30th ,, ,, 
Fine sand and lumps of sandy 
clay ... 
0-30 
33-30 
31 
30th November, 1st, 
2nd, 3rd, 4th Deo. 
1878. 
Close black clay mixed with 
very fine sand and quantities 
of gray limestone. 
6-70 
40‘00 
82 
5th, 6th, 7th, 9th, 
10th, and 11th 
Dec. 1878. 
Black plastic clay with a few 
fragments of shells. 
4.-00 
44-00 
33 
11th December 1878 
Compact hlack clay mixed with 
fine sand. 
0 75 
1 44-75 
j 
34 
11th, 12tli, 13th 
Dec. 1878, 
Black clay mixed with moderate 
sized sand. 
3'30 
48-05 
35 
13th and 14th Dec. 
1878. 
Fine sand and dark earthy clay 
1-35 
49-40 
