“…There are a few reports of studies on the dog (Dolley, 1911;Goodpasture, 1918;Harms, 1924; Sulkin and Kuntz, 1952; Sulkin, 1953Sulkin, , 1955aSulkin, , 1955b; Whiteford, 1964;and Whiteford and Getty, 1966). There are only two reports of age studies on the nervous system of the pig, both dealing with age changes in various brain stem nuclei (Whiteford, 1964, andGetty, 1966).…”