( H5 > 
Altitudes of the Sun, obferved September the ift, 
before Noon, under Sail from Sheer nefs towards the 
Spile-Sand, with the Tide of Ebb, the Wind blow- 
ing hard at North*Eaft, by the YVooden Inftrument 
forward. The fecond Speculum being removed by 
fome Accident from its due Pofition, fo as to in- 
creafe the Angles obferv’d about one Degree three 
Minutes and a half, as appeared by the firft Ob- 
fervations of the Afternoon of the fame Day, made 
with the fame Inftrument, in the fame manner, 
while we continued lying*by near the Spile ; and 
that Degree and three Minutes and a half are added 
to the Errors of the Divifions of the Inftrument in 
the feventh Column. While thefe Obfervations were 
making, the Yacht fleered at firft chiefly Eaft, fome- 
times South-Eaft, afterwards flood to the North-Eaft, 
towards the Swin. The Time of the Watch, was 
regulated by fome of the later Obfervations made 
when we were mod Eaft ward, and this was probably 
the Caufe why the firft Altitudes, which were taken 
while we were more Wefterly, fall fo much fhort of 
the Computations, the Difference decreafing graduv 
ally as we advanced towards the Eaft. 
Altitudes 
