SPECIFIC GRAVITY. 



149 



the oil is left standing for some time, the temperature changes, so 

 that this forms a new source of error. 



I have arranged these observations into four tables according 

 to the class of depth to which each well belongs, the drilled wells are 

 shown in a separate table : — 



/. — Wells below i$i feet in depth. 



Serial number 

 of well. 



Depth in 

 feet. 



Temp, of 

 oil °F. 



Density 

 °B. 



Spee. G. 



Spec. G. at 

 6o° F. 



&7S 



90 



87 



22 



0*9210 



0-9317 



726 



IOO 



87 



23 5 



0*9120 



0*9228 



776 



129 



89 



19 



09395 



0*951 1 



879 



130 



88 



22 



0'92IO 



09322 



202 



132 



86 19 



Average 



0'9595 



0*9499 





0-9147 



0*9209 



//» — Wells jrom 151 to 200 feet in depth, 



Serial number 



of well. 



Depth in 

 feet. 



Temp, of 

 oil°F. 



Density 

 °B. 



Spec. G. 



Spec. G. at 

 6o°F. 



886 



155 



86 



16 



0*9589 



0-9695 



674 



156 



88 



16 



09589 



0*9701 



623 



161 



86 



22*5 



0*9180 



0*9284 



629 



165 



87 



16 



0*9589 



0*9697 



188 



166 



87 



1.0-5 



0*9556 



0*9664 



716 



170 



88 



26 



0-8974 



0*9o86 



734 



185 



87 



16 



09589 



0*9697 



92 



188 



87 



23 



0*9150 



0*9258 



319 



189 



89 



27'5 



0-8750 



0*8874 



731 



192 



85 



16 



09589 



0*9689 



691 



I98 



88 



14 



0*9722 



0*9834 



670 



200 



87 



15 



0^655 



0*9763 



306 



200 



89 



/ 



3i 



U'ERAGE 



08695 



o-S8i 1 





09279 



0-9465 



( 195 ) 



