SCIENCE AND INDUSTRY. 
and also for other purposes. The yields vary according to whether the 
material is treated dry or not. The following are given by one experi- 
menter as the extreme limits per ton of material used :— 
35-45 gallons of water. 
25-30 gallons of liquor, containing 12-15°% of acetic acid. 
4-5% of meth] alcohol and 2-8% of light spirit. 
25 gallons of crude oil, containing 10% light oil, 109%, medium 
oil, 15% phenols and acids, 60% pitch, 5% loss (approx.). 
8 ewt. of coke residue of high calorific value and gas (5,000 
cubic feet). 
A. coke residue of very good quality remains. This can be made into 
briquettes with any suitable matrix.’ It has been stated that the gross 
value of the products derivable from the low-temperature retorting of 
“Blackboy” is greater than that from any other naturally occurring 
organic material in Australia. 
