Anthropological measurements in 1150 female and 480 male inhabitants of the Lublin region were carried out. In all the examined material the length of the right forearm in men ranged from 20 to 30.5 cm (mean-25.40), and of the left one--from 20 to 30 cm (mean-25.3); in women the right forearm ranged from 19 to 31 cm (mean-23.50) of length and the left one--from 19 to 33 cm (mean-23.30) of length. The length of the right and left forearms was always bigger in men than in women. Both in men and women the right forearm was found to be longer than the left one and differences between the length of the forearms related to body's side were almost significant in men, and in women--significant. Significant differences were also found in the length of the forearm in relation to age. The length of forearm was decreased in relation to the age in men and in women it was increased. On the basis of arm-forearm index it can be stated that both in men and in women the forearms values were mostly of short class.