Part I.] Puran Singh : Turpentine Oil and Indian Rosin. 89 
(6) Iron vessels are not to be used for handling hot rosin. 
(7) If possible, it will be best to have a thick coating of tin 
inside the copper stills to avoid initial discolouration. 
(8) Last but not the least, it is essential that in order to pro¬ 
duce the better qualities of rosin, the still should be skilfully “ cut ” 
as is done in America and France, and if this be done, not only is 
the quality of the colophony improved, but also that of the turpentine 
as well. 
