OF ARTS AND SCIENCES. 81 



•€„H 2n Series. 



1 RUTTLENB = C 10 H 20 . 



Specific gravity 0.7703 at 0°; 0.7598 at 15°. 



1. Determination of Boiling-point. — By the thermometer em- 

 ployed, water was found to boil at 101°. 1. 



Observed temperature of liquid at commencement of 



distillation 172°. 5 



Observed temperature of liquid 7 minutes later 172°. 7 



a a a g it a 173° 



Had distilled nearly to dryness. Taking the average of the six 

 observations, and applying the proper corrections for pressure and 

 the upper mercurial column, and also deducting l°.l for the error 

 of the thermometer, the corrected boiliug-point is found to be 

 174°. 9. 



2. Determination of Boiling-point. — By the thermometer em- 

 ployed water boiled at 100°. 5. This experiment was conducted 

 precisely as the last, and the material employed was the same. 



Observed temperature of liquid at beginning of dis- 



Five minutes later had distilled nearly to dryness, the tempera- 

 ture having risen to 173°. 8. Taking 173° as the observed boiling- 

 point, and making the proper corrections for pressure and the 

 mercurial column, and also deducting the error of the thermom- 

 eter, 0°.5, gives 175°. 3 as the corrected boiling-point. 



VOL. XXVII. (n. s. xix.) 6 



