142' Uecords of the Geological Survey of India, [vox. xin. 
Table of Geological Strata of the Artesian Well bored in the Jardin d'Acclimatation 
at Fondioherry —contd. 
ca 
a 
Nnmber c 
Strata. 
Dates. 
Geological Strata. 
Thickness€ 
of Strata. 
Progress^ 
Depths. 
Bemabes, 
M. 
M. 
36 
14th, 16th, 17th, 
Fine sand, earthy clay less dark 
5-30 
54-70 
18th Dec. 1878. 
(56-50) 1st gushing 
37 
18th, 19th, 20th 
Coarse clayey sand mixed with 
2'00 
56-70 
out of water. The in- 
Dec. 1878. 
small gravel, conglomerates 
terviil of time between 
and ferruginous sandstones. 
the 21st December 
1878 and 2nd January 
38 
20th, 21st Dec. 
Coarse pure sand (same ma- 
2-50 
59-20 
1879 was employed in 
1878, and 2nd 
January 1879. 
terials as above). 
clearing away the 
sand in order to ob- 
tain a larger dis- 
39 
3rd January 1879... 
Coarse whitish sand mixed with 
090 
60-10 
charge. 
small gravel, very white clay 
and ferruginous sandstones. 
40 
3rd, 4th January 
White sandy clay 
015 
60-25 
1879. 
41 
4th, 6th, 7th, 8th 
White sand mixed with small 
5-79 
66-04 
Januai’y 1870. 
gravel, ferrugmous sand¬ 
stones, fragments of white 
clay. 
42 
9th January 1879. 
Grayish sand, small gravel, 
0-56 
66-60 
white friahle sandstone, quart- 
zo-inetallic conglomerates and 
ferruginous sandstones. 
43 
10th „ „ 
Blackish sand (same materials 
0-80 
67-40 
without the gravel). 
44 
10th 
Coarse sand and quartzo-metal- 
0-50 
67-90 
lie conglomerates. 
45 
11th 
Grayish sand, sm.all gravel, me- 
0-70 
68-60 
tallic conglomerates and de¬ 
cayed wood. 
(68-85) 2nd gush. 
46 
11th, 13 th, 14tli, 
Gray sand, grits and metallic 
0-50 
69-10 
15th January 1879, 
conglomerates. 
47 
15th, 16th, 17th, 
Coarse sand, sand, small gravel. 
2-40 
71-50 
18th, 20th, 21st, 
decayed wood, fragments of 
22nd, 23rd, 2-lth, 
white and gray clay and me- 
25th, 27th, ami 
28th January 1879 
tallic congloinorates. 
48 
29th, 30th, 31st Ja- 
Very fine and pure gray sand... 
0 90 
72 40 
nuary 1879. 
49 
1st, 3rd February 
Fine black and gray sand, frag- 
1-20 
73-60 
(73-60) 3rd gush. 
1879. 
ments of clay, decayed wood 
and vegetable detritus. 
