YENANGYAT. 131 



water below ; the oil from the lower layer was slightly under pressure 

 which brought the oil to 175 feet from the surface after being found 

 at 509 feet. In No. 5, where it had a thickness of 10 feet, it yielded 

 no petroleum. In No. 6 two arenaceous beds of 27 and 45 feet respec- 

 tively are separated by a clay parting of 37 feet thickness ; the lower 

 part of which has been stated to form two distinct beds; the upper 

 containing a small quantity of oil, the lower gas and water only. It 

 is most probable that the lower bed represents the 4th oil sand, 

 because it corresponds in level to the 4th oil sand which should be 

 found about 100 feet below the 3rd oil sand. 



jth oil sand. — This layer is remarkable for the constancy of its 

 thickness ; hardly exceeding 10 feet, it contains oil only in Nos. 3 and 

 5, while it is dry in No. I, and contains water in No. 6. It isremark- 

 ble that the oil occurring in this sand in No. 3 was under heavy 

 pressure, as it flowed over the top of the well although met with 

 at 513 feet depth from the surface. This bed is about 50 feet below 

 the 4th oil sand. 



6th oil sand. — This bed reaches a thickness of about 60 feet in 

 No. 6, where it contains a small quantity of water, in No. 5 its thick- 

 ness is 45, while it is reduced to 10 feet in No. 3, and from there it 

 seems again to have increased in thickness towards Nos. 1 and 2. 



Jtli oil sand. — A thin bed of not more than 9 feet in thickness 

 hitherto only found in No. 6 well, and probably two thin beds contain- 

 ing gas may represent it in No. 2. 



8th oil sand. — This bed has apparently been found in all the 

 wells, it being about 25 to 30 feet. It seems that the thickness of the 

 separating clay bed varies very much, and with it therefore the depth 

 at which it is found below the 7th oil sand. It is smallest in No. 5, 

 but increases quickly towards Nos. 1 and 6. 



gth oil sand. — A thin layer of 7 feet found only at Nos. 6, 1 and 

 2 ; as it is separated from the following by a very thin clay 

 parting it remains doubtful whether it should not be considered as 

 the top portion of it. 



10th oil sand. — A very thick bed, which in No. 6 has a thickness 

 K2 ( i 77 ) 



