There is this very nice paper by Prof. Albert Ripley Leeds (prof of chemistry at the Stevens Institute of Technology, Hoboken, N.J. who died of gastric cancer in 1902)
He analyzed the ingredients of mother’s milk and relates that to age, nationality, hair color etc.
The style of writing is awesome.
Prof. Albert screwed things up, writes it down and publishes it. That’s something you don’t see a lot nowadays.
Apart from analyses Prof. Albert describes physical properties.
When you study mother’s milk you have to describe this property.
Can you imagine a German brunette giving a chemistry professor (probably with beard) a breast?
Maybe Prof. Albert preferred being nursed by someone else:
Here are some other details of the Polish lady.
Too bad, no exact measurements of her breasts.
Maybe Prof. Albert preferred a younger lady.
This amazing 19th century paper clearly shows how careful they were back then with collecting their data.