FURTHER LIGHT ON FOURCADE

Since the publication of L. P. Adams's paper, “Henry Georges Fourcade”, Photogrammetric Record, 8(45): 287–296 (April 1975), further research in France, Japan and South Africa has disclosed new and interesting information about the life and works of this talented and versatile man. This paper by Fourcade's biographer gives new information about his antecedents; his early education; the fact that, having discovered the theory of relative orientation (want of correspondence) by 1901, he had actually formulated it in 1903 in a letter to Aimé Laussedat, although it was only published in 1926; about confirmation of the precision of his historic 1904 map of Devil's Peak in 1987; the often strained relations that existed between the temperamental inventor, the War Office (M14) and the instrument makers; and about his important contribution to forestry and the Botanical Survey of South Africa.