The clearest and best exposition of this is found in a passage
in the old case of Bransby v. Grantham (1). It is specially
authoritative, because the judgment represents not only the
unanimous opinions of all the Justices of the King's Bench, but
also, as the Chief Justice there said, the opinion of several Justices
of the Common Bench with whom he had spoken of the matter.
The passage deals with the point we are now considering so
decisively that I quote it: - * That which a man has as executor,
he cannot devise to another. For as soon as he is dead»
the thing goes on to the use of the first testator, and his executors
shall have it as executors to the first testator, and to his use, and
not as executors to the last testator, nor to his use. For the goods
which were the first testator's shall not be put in execution for
the debt of the last testator, and the last executors have them by
relation as immediate executors to the first testator. So that the
property which the last testator had in them is taken away by
the relation, and the goods are in such plight as if they had never
been in him. And yet in his lifetime he had the disposal of
them, for then he had authority over them, and had the whole
property as executor, but by his death that authority ceases, and
is transferred to others, viz., to his executors, who shall be
executors to the first testator, and as executors to the first tes-
tator only they shall hold the goods, for they cannot have them
as executors to both the testators. So that inasmuch as the
property which the last testator had was in respect of the
executorship, which is an office that ceases by his death, and is
then instantly transferred, together with the things which he had,
to another, his devise of them is absolutely void. For no man
can devise any thing but what he has to his own use."