the employment was to drill a certain hole. The instruction was to
drill it from above, and there was a prohibition against drilling it
from below. A violation of that prohibition, though of a most
serious nature, still, in the opinion of 'the majority of the Court, -
left the drilling of the hole within the sphere of employment. 4
It is also shown by Conway's Case (2), where a miner, for the
purpose of getting a pick which he required for his work, and which -
was left in a dangerous place, where he was forbidden to go, never- -
theless went there, and was killed by an explosion of gas, and yet
his disobedience did not take his act out of the sphere of employ-
ment. In those two cases there was no clear disconnection. It
could not be said the men were in effect strangers. In each case
they were, to use the words of Kennedy L.J. in Harding's Case (3),
"engaged in carrying out the purpose of" their "employment."
And it may be added that, where two sets of duties are entrusted
to a servant, the separation - if there be a separation intended -
must be clear and distinct. The same principle of justice and policy
which made, as Willes J. says in Limpus's Case (4), the rule of a
master's responsibility necessary, even where the servant's conduct
was not authorized directly or indirectly, requires the master, when
entrusting two sets of duties at the same time in the same hands,
to make the line of demarcation clear and distinct. He gets the
benefit of the servant's acts, and he alone has the full power of
expressing any limitations he desires. He ought, if he so wishes,
to express himself so that no reasonable doubt can exist in the ser-
vant's mind as to the character he fills at any particular moment,
and so that he will be clear, beyond doubt, that a given violation :
contemplated by him will place him in the position of a stranger.
He must understand that such a violation will constitute an act
not merely one which he is prohibited from doing in a particular
place, but one which he is prohibited from doing at all (Barnes's