CONSTRUCTION OF RETORTS. 



71 



cwt.,* distilled in retorts set in the manner just described, and the quantity 

 of fuel used for the distillation, will be as follows. 



Dean's Primrose. 



Gas of specific gravity *390 

 Coke of good quality 

 Ammoniacal liquor 

 Thick tar 



Fine oil, 19^ oz. or 

 Fuel of Wall's-end coal 



Liddle's Main. 

 Gas of specific gravity '400 

 Coke of good quality 

 Breeze 



Ammoniacal liquor 

 Thick tar 

 Coke used as fuel 

 Lime for purifying 



WaWs-end. 



Gas of specific gravity "387 - 

 Coke of good quality 

 Breeze 



Ammoniacal liquor 

 Tar 



Fine oil, 16 oz. 

 Fuel, Wall's-end coal 

 Lime for purifying 



11,700 cubic feet. 

 1^ chaldron. 

 18 gallons. 

 16^ ditto. 

 \\ pint. 

 6 cwt. 1 qr. 15 Ibs. 



11,420 

 43 



3| 

 17 

 16 

 18 



12,000 



43 



3 



17 



17 



1 



8 



cubic feet. 



bushels. 



ditto. 



gallons. 



ditto. 



bushels. 



ditto. 



cubic feet. 



bushels. 



ditto. 



gallons. 



ditto. 



pint. 



bushels. 



2^ ditto. 



The following are the products from a ton of coal distilled under the same 

 circumstances as the above examples. 



Berwick's Wall's-end. 

 Gas of specific gravity *400 

 Coke of good quality 

 Ammoniacal liquor 

 Thick tar 

 Tar used as fuel 

 Lime for purifying 



8,650 cubic feet. 

 14 cwt. 

 12i gallons. 

 12 ditto. 

 19 ditto. 

 86 Ibs. 



* Where I have taken chaldrons as a standard quantity, I wish it to be understood that it is 

 neither the Newcastle nor London chaldron, but a quantity weighing 3024 Ibs., consisting of 36 

 bushels of 84 Ibs. each ; therefore, if required, the results can be reduced to tons by a rule-of- three 

 statement. 



