This is the third of three papers investigating the legislative history concerning infanticide. After Antiquity and the Middle Ages, this paper focuses on legislative reforms during the last 400 years. Despite dreadful punishment, the practice remained frequent until safe abortion became available. In the 17th century, the rate of executions of women for this crime was 1 per 100,000 inhabitants. The actual incidence greatly exceeded this figure. The death penalty failed to deter, and punishing fornication promoted rather than prevented infanticide. Well into the 18th century, severely malformed infants were killed. The lung flotation test, albeit unreliable, was used to save the mother from the death penalty. When the motives for infanticide - poverty, shame, despair, and preserving honour - became understood in the late 18th century, the image of the ‘child murderess' changed, and infanticide shifted from constituting a capital crime to a privileged delict. Illegitimate pregnancy was no longer punished, and lying-in hospitals for pregnant unmarried women and foundling hospitals for their children were established. Specific infanticide laws were issued in Prussia in 1756, Britain in 1803, and France in 1811. Once psychosis and denial of pregnancy became understood, severe penalties were no longer issued. The justifications for lenient legislation included social circumstances, difficult proof, and curtailed protection of the newborn due to its illegitimacy, helplessness, and diminished awareness. Thoughts on the limited right to live of newborn infants are still hampering ethical decisions when the beginning and end of life are near each other.