HANDLING SMALL AMOUNTS OF MATERIAL: DISTILLATION 295 
and the successive fractions which condense are removed with 
a pipette which is drawn down to a very fine tube and with a 
slightly curved end. This pipette is provided with the rubber 
cap r which has been removed from the distilling tube after filling. 
A more universally applicable distilling tube is shown in Fig. 
156. It consists essentially of a tiny tubulated retort with 
attached receiver. The liquid is introduced through the side arm 
which is then closed with a tiny plug of cork or rubber or by 
fusing. Upon heating the liquid the vapors pass down the nar¬ 
row inclined tube, are condensed and collected in the rounded 
receptacle. To prevent loss the narrow tube between retort and 
receiver may be wound with wet filter paper. The distillate 
