Incidentally the brief contained three pages of law.
The most striking part of the argument contained in the brief was the testimony of physicians on the toxin of fatigue.
"Medical Science has demonstrated," says this most important paragraph, "that while fatigue is a normal phenomenon ...

excessive fatigue or exhaustion is abnormal....

It has discovered that fatigue is due not only to actual poisoning, but to a specific poison or toxin of fatigue, entirely analogous in chemical and physical nature to other bacterial toxins, such as the diphtheria toxin.

It has been shown that when artificially injected into animals in large amounts the fatigue toxin causes death.

The fatigue toxin in normal quantities is said to be counteracted by an antidote or antitoxin, also generated in the body.
But as soon as fatigue becomes abnormal the antitoxin is not produced fast enough to counteract the poison of the toxin." The Supreme Court of the State of Illinois decided that the American Constitution was never intended to shield manufacturers in their willingness to poison women under pretense of giving them work.