“…Mechanical properties of skin as influenced by age and by various pharma cological factors have been studied by many authors (Brozek and Kinzey, 1960;Dick, 1951;Fry et al, 1964;Grahame and Holt, 1969;Harkness, 1961;Harkness and Harkness, 1966;Holzmann et al, 1971;Jansen and Rottier, 1958;Kenedi et al, 1964Kenedi et al, , 1966Lanir and Fung, 1974;Mendoza andMilch, 1964/1965;Millington et al, 1971;Wright, 1964, 1966;Rollhäuser, 1950;Ruppelt, 1937;Schade, 1912;Schmidt-La Baume, 1927a, b, 1928, Stütt gen. 1965Vogel, 1969Vogel, , 1971Vogel, , 1972aVogel, , b, c, 1973Vogel, , 1974aVogel etaL, 1970;Weinig and Zink, 1967;Wenzel, 1950).…”