In Victorian england, impoverished women would pay others to kill their infants for them:http://www.loyno.edu/~history/journal/1989-0/haller.htm
It was called "Baby Farming".
"The primary objective of professional baby farmers was to solicit as many sickly infants or infants under two months as possible, because life was precarious for them and their deaths would appear more natural. They would adopt the infants for a set fee and get rid of them as quickly as possible in order to maximize their profits. The infants were kept drugged on laudanum, paregoric, and other poisons, and fed watered down milk laced with lime. They quickly died of thrush induced by malnutrition and fluid on the brain due to excessive doses of strong narcotics. The costs of burial was avoided by wrapping the naked bodies of the dead infants in old newspapers and damping them in a deserted area, or by throwing them in the Thames.
"Older infants were also lucrative. These babies, whose young mothers struggled to support and to visit them on a regular basis, were the ones who suffered a slow and agonizing death. Babies accepted under these conditions had to be healthy and robust. They were profitable because they could withstand the most abuse before they finally succumbed; the longer they lasted, the longer the weekly fees were paid. To insure maximum profits the farmers would slowly starve the infants to death. The mothers continued to work night and day to support their infants believing they were being well cared for only to watch them slowly waste away."
Boy - those were the days!