PART IV.
FORM AND DIMENSIONS OF THE RETORTS ORIGINALLY EMPLOYED FOR MANUFACTURING COAL GAS 51
APPLICATION OF HEAT--FLUE PLAN ORIGINALLY ADOPTED 59
REPORT ON A COURSE OF OPERATIONS, MADE WITH SETS OF 66, OF 30, OF 116, AND OF 64 RETORTS, WORKED ON THE FLUE PLAN 61
OVEN PLAN LATELY ADOPTED 67
DESCRIPTION OF THE RETORT OVEN 69