Earley 7
Steps:
- boxing to create a collecting area (left hand tree)
- chipping to wound the tree to cause resin to flow down it
into the box
- dipping the collected gum into a barrel--workers were
expected to dip about 2,000 boxes a day
- distilling the resin into turpentine and rosin
Notice:
- that the resin is not the sap of the tree but how
it protects itself when injured
- trees react to injury by producing more resin, so more
can be collected
- that large-scale turpentining operations used slaves
(a drama about those slaves)
- the work was strenuous and more continuous than
agriculture
- but the slaves had expertise that gave them some
bargaining power over working conditions
- though less so than other industries because they were
isolated (more like a sugar plantation)
Uses for spirits of turpentine (the distilled product):
- the terpines in turpentine give flavor to retsina wine
and in smaller amounts to other products
- however in significant amounts it is poisonous the same
way gasoline is
- but it does kill germs, so it isn't surprising it was
found useful in medicine
- it was mostly used for medicine before first third of the
19th century, when it began to become a more important product
- it was used as a solvent in making rubber, which was
becoming a big industry
- it also dissolves oils, which makes it a good paint
cleaner but also useful for other cleaning and for combining
with beeswax for waterproofing
- it came to be widely used as part of a lamp oil mix
called camphene, starting in the 1830s (before kerosene from
petroleum deposits became common)
- by the 1850s naval stores were the south's third largest
export crop (after cotton and tobacco)
Uses for rosin
- to harden products made from soft fat, such as soap and
candles
- waterproofing
- to stiffen paper
Distilling
- the copper still introduced for making liquor in the
1830s also revolutionized turpentine distilling--as much as
the cotton gin revolutionized cotton
- for best quality the gum had to be distilled quickly
after collecting
- raw turpentine boils at 363º F, rosin breaks down at 392º
F
- videos
of making turpentine
- more pictures