would require a very great Stream to effrd Ir^ in fo 
large Inkts as are the Channel of England and t* x Q^r- 
Ocean ; whence the 1 ide is found to fet ftrongeft 
in thofe places where the Se^ grows narrowed ; the lame 
quantity of Water being to pais through a fmalier PaC 
iage: This is moft evident in the Streights, between 
Portia^ and Cape de Hague in Normandy^ where the 
Tide runs like a Sluce and would be yet more between 
Dover and Calis^ if the Tide coming about the Ifland 
from the North did not check it. And this force being 
once impreffed upon the Water, continues to carry it 
about the level of the ordinary height in the Ocean, 
particularly where the Water meets a direft Obftacle, as 
it is at St. Malos ; and where it enters into a long GWn- 
neljWhich running far into the Land^grows very ftreight 
at its Extremity ; as it is in the Severn-Sea at Chepftom 
and Brijlol. 
This flioalnefs of the Sea and the intercurrent Con- 
tinents are the reafbn, that in the open Ocean the time 
of High-^water is not at the Moons appulfe to the Meri- 
dian, but always fome Hours after it; as it is obftrved 
upon afl the Weft-Coaft of Europe and Africa^ from Ire^ 
Jand to ihQ Cape of Good" Hope: In all which a W". 
Moon makes High- water, and the fame is reported to 
be on the Weft fide of America. But it would be end- 
lefi to account all the particular Solutions, which are 
eafie Corollaries of this Hypothejis ; as why the Lakes, 
(bch^s th^CafpianSeay Mediterranian Seas, fuchas 
the Black Sea, the Streights and Baltick, have no fen- 
fible Tides: For Lakes having no Communication with 
the Ocean, can neither increafe nor diminifli their Wa- 
ter, whereby to rile and fall ; and Seas that communi- 
cate by fuch narrow Inlets, and are of fo immenfe an 
Extentjcannot in a few Hours time receive or empty Wa- 
ter enough to raifeor fink theirSurface any thing -enfibly. 
Y yy z Laftly, 
