By &c.

Whereas the Commissioners appointed by Act of Parliament for the discovery of Longitude at Sea &c have thought it expedient to send out for trial, during your present intended Voyage, the Original Watch Machine, made under their Encouragement by the late Mr Harrison, and, in order, as well to prevent any improper Management or ill treatment of the said Watch Machine, as any suspicions thereof, have caused 3 Locks of different Wards, to be affixed to the Box in which the same is lodged, and have desired, that the Keys thereof may be kept by yourself, and such other Officers of the Vessel you command as we shall direct; You are therefore hereby required and directed immediately after the said Keys (which will be sent to you by the Astronomer Royal, and which, in order to guard against Accidents, you will receive in Duplicate) come to your hands, to dispose of them in the following manner Vizt To keep those of one of the Locks of the said Box, yourself, and to deliver those of another of the said Locks to the Master, and those of the third Lock to the Master's Mate, of the Vessel you command; and you are to be present yourself, and to take care that the said Master and Master's Mate, be present also, every day at the winding up of the said Machine Watch, and to see that the respective times shewn thereby be properly inserted and attested under your, and their hands respectively, in the general Observation Book; the keeping of which will be recommended to you by the said Commissioners; But if it shall happen that you yourself, or the said Master, or Master's Mate, cannot, at any time thro' indisposition, or absence upon other necessary Services, conveniently attend as above directed, you are, in such case, to take care, that the Keys in the Custody of the Person who cannot attend, be delivered to some other Officer of the Vessel you command, whom you can best trust therewith, in order that he may supply the place of such invalid or Absentee. Given &c the 13th March 1777.

Lieut Young — Lyon At — Galleons Reach.
By &c
PS.