#
#   Herbert E. Ives
#   The Fire-fly as an Illuminant
#   Journal of the Franklin Institute - vol 194 (1922)
#   pp. 213-230
#   Figure 6
#
#   quantity    power

[Control]
Xpx Ypx X Y
351 978 500 0
681 1006 675 0
383 602 500 160
#   713 627 675 160     # 3 points are enough for an exact fit

[Fire-Fly]
351	978
351	978
374 973
386 964
397 946
410 899
419 860
437 794
449 746
464 701
491 666
503 656
517 658
522 669
531 711
537 741
548 784
561 828
567 852
576 886
585 918
594 944
605 966
626 986
643 996
662 1002
681 1006
681 1006
