( 4j2 ) 
he favour’d me with a Letter from thence : His Name 
is Thomas Phot, and bis Letter bears Date the 3 6 th 
of November 1715 ; it is in French, and the Subfiance 
of it in Englijh , is as follows, viz. 
£ That he had made ufe of the Marine-Surveyor in 
t£ his Voyage to Canfo in America, and had been more 
“ than ordinarily careful therein, in order to make a 
c juft Report of it} that he had tried it upon a Me- 
£ rtdian with good Obfervations, and found it to an- 
“ fwer his Expectation, and to be preferable to the 
“ Log, particularly in rough and flormy Weather} 
££ that it had been much admir’d by feveral Mailers 
« of Ships, and particularly by Captain St. Loe , of his 
“ Majefty’s Ship the Ludlow -Cajlle , who express’d a 
“ great Liking to it. He concludes his Letter with 
££ wi filing I had an Opportunity to perufe his Journ- 
<£ als, whereby it would fully appear how muTi my 
« Invention is preferable to the Log. 
Being inform’d, that Captain Henry Daniel 1 had 
come over as a PalTenger from Canfo in America , to 
England, in the aforefaid Veffel William and Thomas } 
and being willing to obviate every Objection that 
might be brought againft the Marine- Surveyor, I ap- 
plied my felf to that Gentleman for his Opinion of it, 
who was pleafed to fend me the following Certificate. 
tr -jiHESE are to certify all whom it may concern, that I Henry Daniel), who 
,C I je ave been at Sea upwards of twelve Tears, firfi as a Voluntier , and af- 
1 1 ter wards Us a Midshipman, did lately come over as a Pajfenger in the William 
ct and Thomas, from Canfo to Plymouth, in which Veffel there was an In - 
« firument fix'd at the Stern of her, call'd the Marine-Surveyor, invented by 
" Mr Henry de Saumarez, for afcertaining the Way of a Ship in the Sea ; and 
<. as that Gentleman has applied to me for my Opinion of it, I do hereby certify, 
** that we found it much more correct than the Log; and that in a Gale of 
“ Wind, our Reckoning by it agreed with our Obfervation, which the Reckoning 
« by the Lo<t feldom did. And l mufi, in Jufiice to that Gentleman, fay, that 
*< foe kept our Reckoning both by his Infirument and the Log, and found it 
“ much preferable thereto, or to any other Method for obtaining the Ship's Di- 
<• fiance. In witnefs whereof, I have hereunto fet my Hand this 4 th of De- 
cember 1721;. Damdt 
FINIS. 
