SUMMARY
In Gallus domesticus species, the cerebral emispheres are constituted by the grey and white matter. The white matter is located into emispheres’ center, integrating in its mass a number of nervous nuclei, while the grey matter, placed to the periphery and into the center of telencephalon, composes the cerebral cortex and telencephalic nervous nuclei. Histologically, the white matter is constituted by nervous mielinic prolongations (projection, association and commisural fibres), glial cells and blood vessels (including muscular arteriols) originated from the leptomeningeal space. This data, based on our experiment, are illustrated by the most suggestive aspects, chosen to be presented in this paper work.