[Organogensis of the human extensor digitorum longus and the peroneus tertius evaluated from the viewpoint of evolutionary myology].

Our present knowledge on the organogenetic development of the upper muscles is rather general and incomplete and that concerning m. peroneus tertius even contradictory. The author has studied in advance the variability of the above mentioned muscles in 277 human inferior limbs and in 62 pelvic limbs of 19 species of non-human Primates. In this way he has received precise indications for an organogenetic study of m. extensor digitorum longus and of m. peroneus tertius, which gives a possibility for the stages of this development to be determined. These stages are studied in the present work of complete series of cross sections of the corresponding parts of inferior limbs of 34 human embryos and fetuses from 12 to 67,5 mm C. R. L. coloured for an histological investigation.