Selection criteria for wet-nurses: Ancient recommendations that survived across time.

This article will describe the content of the key criteria for the selection of wet nurses that persisted across time and the authors who transmitted this advice. Where relevant, it will include variations, such as additional recommendations or a different weighting being given to one or other criterion by a particular author. The focus is on the selection of a wet nurse for the employer's baby. The factors that led a woman to enter this employment and the consequences for her own baby will not be addressed here as they will be discussed elsewhere. The article is an historical one, drawing on primary sources, where possible, and important secondary sources. Guidelines for the selection of wet-nurses have existed from antiquity to the early 20th century. The key recommendations managed to survive across the centuries because they were considered useful by influential ancient and Early Modern and later authors who passed them on through copying and translations. It is tempting to assume that the prescriptive advice was followed by physicians and mothers. However, the discussion will raise doubts about whether the criteria were adhered to by physicians and parents, particularly when wet nurses were in scarce supply.