Tinsley v. Treat, 205 U.S. 20 (1907), was a case decided by the Supreme Court of the United States that found while an indictment in a removal proceeding constitutes prima facie evidence of probable cause, it is not conclusive, so evidence put forth by a defendant showing that no offense triable in the district to which removal is sought had been committed is admissible, and its exclusion is not mere error, but the denial of a right secured under the Federal Constitution.

The object of the statute was to protect the lives and limbs of railroad employees by rendering it unnecessary for men operating the couplers to go between the ends of the cars, and the words "used in moving interstate traffic" occurring therein are not to be taken in a narrow sense.

Assumption of risk as extended to dangerous conditions of machinery, premises, and the like, obviously shades into negligence as commonly understood.

Section 8 of the Automatic Coupler Act having exonerated the employee from assumption of risk under specified conditions, the employee's rights in that regard should not be sacrificed by charging him with assumption of risk under another name, for example, with contributory negligence.

In this case, the so-called contributory negligence of the deceased employee was so involved with and dependent upon erroneous views of the statute that the judgment complained of must be reversed.