Just what you expect Female or Male and then everything else you would normally get on a birth certificate. Most but not all Female/Male births have in the same quarter a corresponding death certificate, so you need to check deaths as well, as the birth and death were often registered at the same time. Some of these children did however go onto to live and it just seems the parents hadn't made up their minds about the name of the child, though there may be a corresponding baptism which gives the name. I have as late as 1907 a Male birth registered, who only died within the last 5 years. His birth was never re-registered. However, most of the births registered I know of where the children lived are in the early years of civil registration.
Regards
Valda