68 



PITCH.— RESIN. 



which the tar descends as the heat extricates it 

 from the wood^ and then runs off by the drains 

 into barrels placed for its reception^ which^ 

 when filled^ are bunged up ready for sale. If 

 the tar be boiled^ so as to free it from watery 

 and other fluid parts^ it becomes pitch. Nor- 

 way, as it yields the best pine timber, produces 

 also the best of these extracts. Turpentine, 

 when reduced to dryness, leaves resin; and 

 if violently stirred, as it boils with water, it 

 forms white or yellow resin. 



One of the lads had strayed away a little 

 during these observations, and was seen busily 

 employed in endeavouring to obtain a practi- 

 cal demonstration of the facts advanced, by 

 boring a hole, with a carpenter's auger, in one 

 of the firs of the plantation. 



That will do, Frederick," said Mr. Long- 

 hurst : and I would rather the operation had 



