A Móra Ferenc Múzeum Évkönyve, 1969. 2. (Szeged, 1969)

Kiszely, István: Derivatographic Research of Subfossile Bones

Further tasks Though results are promising it still might not be said that derivatographic analysis of subfossile bones can always and exactly define absolute age between 180 of our era and 5000 before our era. Derivatographic research of the soil sample at the same time as that of the bone, and the determination of soil correction are still to be done. Fig. 5. Termogravimetric values on 580° С of bones origining from different ages and their places on the scale determined by Peter David. Besides, the whole organic and inorganic analysitic (and gas-chromatographic) research of the derivatogramms of bones at temperatures measured at their effectpoints and that of the products of decomposition owing to calcination are proceeding. In this case we can exactly determine, what kind of changes happen in the organic or inorganic bone substance at a certain temperature. On the basis of the definition of each components separately, and of the relation of the organic substances to the inorganic ones further conclusions can be drawn as to sex and age, too. Summary After some preliminary measurements of informatory character, made together with Peter DÁVID, the author of the present paper has prepared derivatographic analyses of different subfossile bones from several points of view. The aim to be achieved has been to gain impersonal, reproducible information, registered by an instrument concerning the organic and inorganic components of bone substance. The final aim is to gain such informations for time 223