64 VREDENBURG : RECENT ARTESIAN EXPERIMENTS IN INDIA. 



paper slips affixed to the glass, a much inferior plan, for when, as has sometimes 

 happened, any of these labels have peeled off, it is impossible to determine the true 

 thickness of some of the layers. Where I have not seen the specimens, or none 

 have been preserved, the section is given by repute. The term grit is used to 

 indicate a texture intermediate between that of sand and of gravel, the limits of 

 size of the individual grains may be taken as 5 l j and 5 inch. The horizontal line 

 indicates the base of the newer alluvium." 



Detailed sections of borings. 

 No. i. Mohr Brothers. 



There are two wells, the section of the deepest is — 



0—109 ft. fine grey clayey silt, 

 109 — 136 „ fine grey sand. 

 136 — 180 ,, grey clayey silt. 



180—190 ,, yellowish sand (silt of the newer alluvium mixed 

 with sand grains of the older). 



100—210 ft. sand. 



210 — 220 ,, fine gravel ranging to J" diameter. 



22j — 270 „ coarser gravel, some pebbles as much as an inch 



in diameter, 

 below 270 feet, yellow sand again. 



No. 2. Bulloch Brothers & Co. 



One well, section said to be — 

 o — 90 ft. clay. 

 go— 96 ,, sand. 

 96 — 220 ,, clay. 

 220—240 „ yellow sand and gravel. 



No. 3. Diekmann Barckhausen & Co. 



One well, 242 feet deep. No record. 

 No. 4. Steel Brothers & Co. Upper mill. 



Two wells, 50 feet apart. There is a distinct difference 

 in the water of the two. One contains a small propor- 

 tion of oily matter, probably petroleum, which floats 

 on the surface of the water. Section — 



0—30 ft. fine brown silt. 

 30 — 40 ,, dirty yellowish sand. 

 ( 64 ) 



