OP ARTS AND SCIENCES. 



85 



Having already given tables of the boiling-points, — the deter- 

 minations of which are above detailed, — with such deductions and 

 remarks as seemed appropriate, I will now proceed to treat the 

 other results in a similar manner. A comparison of these results, 

 which the tables will greatly facilitate, will bring to view some 

 interesting relations. 



TABLE I. — Shoicing the Difference of Specific Gravity corresponding to Dif- 

 ference of Boiling-point of the Bodies obtained from Pennsylvania Petroleum, 

 arranged in the Order of the Boiling-points, regardless of Serial Classification or 

 Elementary Difference ; and also showing the Differences of Specific Gravity at 

 0° and 15°. 



* Ronald's determination. 



t Calculated. 



