the case in doubt as to whether those conditions are fulfilled or
not, where the known facts are equally consistent with their
having been fulfilled or not fulfilled, he has not discharged the
onus which lies upon him." That is the ratio decidendi in the
present case, and was the proper guide to the Local Court, and
afterwards equally to the Court of Appeal. What, then, were
the facts the proof of which was essential to the plaintiff's right
to succeed? She was to prove that the injury was caused to
Samuel Ennor by an accident; that such accident arose out of
the employment ; and that it arose in the course of the employ-
ment. (Workers' Compensation Act (W.A.) 1902, sec. 6). The
injury was beyond doubt cerebral hemorrhage It may be taken
that it arose in the course of the employment. Has the plaintiff
shown (1) that it was caused by an accident, and, if so, (2) that
the accident arose out of the employment in which he was
engaged? An accident, as the term is used in the section, has
been detined in the House of Lords as " an unlooked-for mishap or
an untoward event, which is not expected or designed." Fenton v.
Thorley & Co. Ltd. (1). Now, the deceased had been infected with
lead-poisoning which, as he told the doctor who attended him for
the cerebral hemorrhage, had come upon him ten or fifteen years
before. The effect of that poison would be that his arteries would
be thickened, but weakened. They would lose their elasticity and
be more likely to give way under a strain. Though the poison
itself may be eradicated, its effects will remain. The doctor said
that it generally results in permanent harm, and when he said
this he had already described the harm. The inability of an
artery thus enfeebled to withstand the pressure of the blood upon
its walls had, of course, led to the cerebral hemorrhage, and the
inability had resulted from the old lead-poisoning. This being
the injury, was it caused by an accident? Ennor began to work
at the Federal Gold Mine on 19th July 1909. He worked, we
are told, three shifts; that is, he worked on one shift each day
for three days, the last being the day on which the cerebral
hemorrhage set in. He was engaged in boring holes in a stope
and firing them. For the boring he was using-a brace and an
auger bit. On his first shift, that is, on 19th July, he made a
(1) (1903) A.C., 443, at p. 448, per Lord Macnaghten.