Percy injected the subject and dissected and described the mammary blood-supply.

Hirst mentions a negress of nineteen who had nine mammae, all told, and as many nipples.
The two normal glands were very large.

Two accessory glands and nipples below them were small and did not excrete milk.

All the other glands and nipples gave milk in large quantities.

There were five nipples on the left and four on the right side.