RT Journal A1 CROTHERS B T1 MEchanism of labor from the neurologic point of view JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1929 FD January 12 VO 92 IS 2 SP 99 OP 00 DO 10.1001/jama.1929.02700280003002 UL http://dx.doi.org/10.1001/jama.1929.02700280003002 AB Those of us who do not conduct labor see many children whose disabilities seem to be related to birth injury. In the nature of things, it is often hard to establish facts. One difficulty is a very real one and can be related to a varying sense of time in various groups of physicians. To the obstetrician nine calendar months is a long time to wait for a few hours of labor, which is terminated successfully when the baby breathes. Those of us who deal with children regard this period as the beginning of a series of increasingly complicated problems stretching over years. Many of our ideas are the fruit of more or less academic reflection rather than of direct experience.A difference in point of view between obstetrician and pediatrician is perhaps inevitable. As a pediatrician, I believe that it is the duty of the obstetrician to consider whether