A woman whirling samples of milk in order to seperate the fat so it can be measured.

Whirling milk

A woman whirling samples of milk in order to seperate the fat so it can be measured.

A whirling-table, with a brass tube attached. A cork is shooting out of the tube.

Whirling table

A whirling-table, with a brass tube attached. A cork is shooting out of the tube.