Mornington wrote to Maître Lepertuis some time after and which explains
certain points with greater precision:

"I request Maître Lepertuis to open my will on the day after my death, in
the presence of the Prefect of Police, who will be good enough to keep
the matter an entire secret for a month. One month later, to the day, he
will have the kindness to summon to his office Maître Lepertuis, Don Luis
Perenna, and a prominent member of the United States Embassy. Subsequent
to the reading of the will, a cheque for one million francs shall be
handed to my friend and legatee Don Luis Perenna, after a simple
examination of his papers and a simple verification of his identity. I
should wish this verification to be made as regards the personality by
Major Comte d'Astrignac, who was his commanding officer in Morocco, and
who unfortunately had to retire prematurely from the army; and as regards
birth by a member of the Peruvian Legation, as Don Luis Perenna, though
retaining his Spanish nationality, was born in Peru.

"Furthermore, I desire that my will be not communicated to the Roussel
heirs until two days later, at Maitre Lepertuis's office. Finally--and
this is the last expression of my wishes as regards the disposal of my
estate and the method of proceeding with that disposal--the Prefect of
Police will be good enough to summon the persons aforesaid to his office,
for a second time, at a date to be selected by himself, not less than
sixty nor more than ninety days after the first meeting. Then and not
till then will the definite legatee be named and proclaimed according to
his rights, nor shall any be so named and proclaimed unless he be present
at this meeting, at the conclusion of which Don Luis Perenna, who must
also attend it, shall become the definite legatee if, as I have said, no
survivor nor heir of the Roussel sisters or of their cousin Victor have
come forward to claim the bequest."