own conduct as a disqualification from recovery for tort. But there
is much case law upon the subject in the United States, and from it
the directness of the connection between the illegality and the injury
seems to have emerged as the discrimen more generally adopted.
If the immediate cause of the injury is the unlawful act of the plain-
tiff, he cannot recover ; but, if the unlawful act does no more than
create a prior state of affairs upon which the defendant's negligence
operates, he may recover. In Massachusetts the rule against
recovery by a plaintiff himself acting unlawfully was carried to
great extremes in the application of a law forbidding the driving of
vehicles on Sunday. The decisions were not all consistent, but, for
the most part, the plaintiff was held to have suffered no actionable
wrong where, but for his driving on Sunday, the injury would not.
have occurred. Thus, a plaintiff who was injured by a defective
highway was held disentitled to recover from the highway authority,
because the injury arose from his driving upon the highway on Sunday
(Bosworth v. Swansey (1) ). A plaintifi who had ridden his horse on
Sunday and tied it up at the edge of the road was held disentitled to
recover from a defendant who negligently drove into the standing
horse (Lyons v. Desotelle (2) ). These decisions have been disap-
proved in other States, but a learned writer has supported the first,
though denying the correctness of the second : - "In Bosworth v.
Swansey (1), as has been seen, the defendant's negligent act served
only to create a dangerous passive condition ; the plaintiff's unlawful
act of driving was the active agency which finally produced the
result. In Lyons v. Desotelle (2), on the other hand, the unlawful
act served only to create a passive antecedent condition, from which
damage could result only when some further act was done. Thus it.
would appear that the unlawful act of driving to the place where
the horse was hitched was but a remote cause, whereas the defen-
dant's act of driving negligently was the efficient immediate cause "
(Harold S. Davis, Harvard Law Review, vol. 18, at p. 513). This
serves to illustrate the point of distinction adopted. The doctrine
which he maintains is that, if the plaintifi's unlawful act does
no more than create a condition upon which the defendant's wrongful