Cliap. 100.] 
ANOMALOUS TIDES. 
127 
On whicli account neither lakes nor rivers are moved in the 
same manner. Pytheas^ of Massilia informs us, that in 
Britain the tide rises 80 cubits ^ Inland seas are enclosed 
as in a harbour, but, in some parts of them, there is a more 
free space which obeys the influence^. Among many other 
examples, the force of the tide will carry us in three days 
from Italy to Utica, when the sea is tranquil and there is no 
impulse from the sails ^. But these motions are more felt 
about the shores than in the deep parts of the seas, as in the 
body the extremities of the veins feel the pulse, which is the 
vital spirit, more than the other parts ^. And in most estu- 
aries, on account of the unequal rising of the stars in each 
tract, the tides diifer from each other, but this respects the 
period, not the nature of them ; as is the case in the Syrtes. 
CHAP. 100. — WHEEE THE TIDES EISE AND EALL IN AN" 
UNUSUAL MANNER. 
There are. However, some tides which are of a peculiar 
nature, as in the Tauromenian Euripus^, where the ebb and 
flow is more frequent than in other places, and in Euboea, 
where it takes place seven times during the day and the 
night. The tides intermit three times during each month, 
being the 7th, 8th and 9th day of the moon''. At G-ades, 
which is very near the temple of Hercules, there is a spring 
^ Our author has already referred to Pytheas, m the 77th chapter of 
this book. 
2 It is scarcely necessary to remark, that the space here mentioned, 
which is nearly 120 feet, is far greater than the actual fact. 
^ "Ditioni paret;" "Lunao soUsque efficientise, quae ciet sestum." 
Ilardouin in Lemaire, i. 430. 
The effect here described could not have depended upon the tides, 
but upon some current, either affecting the whole of the Mediterranean, 
or certain parts of it. See the remarks of Hardouin in Lemaire. 
^ Pliny naturally adopted the erroneous opinions respecting the state 
of the blood-vessels, and the cause of the pulse, which were universally 
maintained by the ancients. 
6 The name of Euripus is generally applied to the strait between 
Boootia and Euboea, but our author here extends it to that between Italy 
and Sicily. A peculiarity in the tide of this strait is referred to by 
Cicero, De Nat. Deor. iii. 24. 
" JSstus idem triduo inmense consistit." " Consistentia, sivemedio- 
critas aquarum non solum septima die sentitur, sed et octava, ac nona 
durat," as Hardoum explains this passage, Lemaire, i. 431. 
