REICHERTS DISTILLATION PROCESS. 



41 



means of which a cui^rent of air was drawn through at the rate of 

 about 4 to 6 bubbles per second. 



The distillate, before titration, was thoroughly cooled (to about 

 55° Fah.) and filtered through wet paper. Phenol-phthalein was 

 used as the indicator. 



SERIES I. 



These expei'iments were intended to illusti'ate the effect of using 

 air not freed fi-om carbon dioxide. The tube of the condenser did 

 not dip into liquid in the receiver. 



Potash used. 



Sulphuric 

 Acid. 



Distillate 

 collected. 



Total Acidity ^^.j^jij. 

 mc.c.on gram fat. 



Soda. ! ^ ,. 



51.7 c.c. 

 29.7 " 

 38.1 " 



103.3 c.c. 

 59.5 " 



76.0 " 



103.3 c.c. 

 59.5 " 

 76.0 " 



21.0 c.c. 

 10.2 " 



17.1 " 



4.06 c.c. 

 3.43 " 

 4.50 " 



The acidity found bears no constant relation to the quantity of fat 

 used ; nor is any average increase shewn for increasing quantities of 

 fat u.sed. 



The arbitrary volume of distillate collected (equal to the quantity 

 of sulphuric acid used, or to two-thirds of the total quantity of the 

 liquid in the distillation-flask) is more than that collected in^eries- 

 II., and less than that collected in Series III. 



SERIES II. 



In this series of experiments the air drawn through the apparatus 

 was freed from carbon-dioxide by being washed thi^ough strong solu- 

 tion of caustic potash. , 



