This report corrects and enlarges the previous one. ^*1 In this report, the fire temperature-time curves in rooms are shown according to "fire duration factor","fire load" and "fire temperature factor" of the room, which factors are introduced in this report, and the equivalent standard curve in the previous report ^*2 is corrected here.

^*1 B. R. I. Occasional Report, No. 11 (1963)
^*2 Manuscript received on February 13, 1964