7 8 VETERINARY OBSTETRICS. 
back, may cause the foetus to change position. This 
should always be tried when other means fail. It 
occasionally happens that the foetus is so firmly wedged 
in the cavity that it cannot be made to alter its position; 
then we must cut through the spine at the part 
presented, remove the abdominal organs, and if delivery 
cannot then be effected, transect the abdominal wall, 
and deliver the two portions of the foetus separately. 
