( 4? 1 ) 
“ Hiefe are to certify all whom it may concern, 
“ that I John Hants, who have us d the Sea for thir- 
“ ty Years pad and who was lately Mate of the 
“ William and Thomas, bound from London to Canfo 
“ in America, was prefent, when Mr. Henry de Sau- 
“ mares, came on board our Veffel and fix’d an In- 
“ i'trument at the Stern of her, call’d the Marine - 
“ Surveyor, invented by him for afcertaining tire 
ay t)f a Ship in the Sea, much more correctly 
that by the Log, or any Method hitherto in Ufe 
“ for that Purpofe: And as he delir’d us to try it 
c ‘ with the Log, and to make an impartial Report 
“ whether we found it preferable to the Log or note 
“ I do hereby, in Juflice to that Gentleman, certify’ 
“ That we kept our Reckoning both by the Log and’ 
“ this Inflrument, and do find it much preferable to 
the Log, or any Thing that has yet appeared to me 
“ for attaining the Ship’s Difiance fail’d j the Truth 
“ of which I am ready to teftify on Oath, if call’d on 
“ t0 do it- In witnefs whereof, I have hereunto fee 
“ my Hand this 15th of November, 1725. 
“ Sign’d in the K Robert Gamble , n 1 tt ■ 
“ Prefence of ) Elijha Dobree, J o m Harris 4 
It may perhaps be asked, how I came to produce a 
Certificate from the Mate, and not from the Captain 
of the William and Thomas .<? To which 1 anfwer 
that the Mate left the Ship at Plymouth, and came to 
Town, fo that 1 had an Opportunity of obtaining his 
Opinion of it, without the Captain’s, who. foon after 
his Arrival in England, made the bell of his Way to 
the Illand of Guernfey ; However, as I had defir’d him 
to try my Inflrument with the Log, and impartially 
report to me, whether he found it preferable or not 
to that Method of obtaining the Ship’s Diflan’ce fail’d • 
he 
