1858 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Physiogenia, term for the operations of nature, according to Rumpf, of the formation of bodies from original elements: physiogeny.

1879 tr. E. Haeckel Evol. Man I. 24 Physiogeny, the germ-history of the functions, or the history of the development of vital activities in the individual.

1879 tr. E. Haeckel Evol. Man II. 461 So will Physiogeny..make a true recognition of functions possible, by discovering their historic evolution.

1913 Lancet 2 Aug. 291/1 Nor do the exploits of synthetic biology stop here. Witness the chapters on the physiogeny of the circulation, [etc.].

1930 E. J. Hatfield tr. E. Rádl Hist. Biol. Theories xii. 127 Physiology [in Haeckel's writings] became ‘physiogeny’, a study of the development of function.

1959 Q. Rev. Biol. 34 274/2 Haeckel was a morphologist, he was a structural biologist, and we still suffer from the fact that though he talked about physiogeny he drew his evidence from structural form.

1997 Compar. Biochem. & Physiol. A. 118 64/1 Hackel [sic] in 1864 wrote that the objective of future physiogeny will be the same exhaustive and successful elaboration of the history of the development of function as has already long been accomplished by morphogeny with respect to the development of form.

2003 Behavioral Processes 61 144/2 A complete account of behavior that stresses explanation over control must encompass descriptions of the behavior's phylogeny, ontogeny and physiogeny.