“…Evi dence has been produced to support the hypothesis that pressor mechanisms involved were likely to be reflex in nature. It had been reported earlier tlint the pressor responses could be abolished or reversed by section of the spinal cord (Rabat and Hedin, 1942) or denervation of the area (Olson and Necheles, 1943). This also supports the theory of reflex origin of the pressor response.…”