(8i4) 
Libra 5 or the next Tyde after , according as the Moon is near 
her Full or change when the Sun thus enters into the faid 
Signrs: And then it flows in height about 7 J fathoms , or 45. 
foot-, the lowed Neap-tydes flowing in height 25. foot. 
2. We obferve alfo, that the lotveft Neap makes the highest 
Spring, if the Nottb-Eaft Winds hinder not by blowing hard, 
and fo keep back the Tydes 5 as ufually they do when they blow : 
jvhofe. contrary winds {South-weft) if they blow hard, make 
here the higheft Tydes. 1 
- 3, Concerning our Diurnal Tydes, we obferve,that from 
about the latter end of March till the latter end of September , 
they are about 1. foot and 3, inches higher perpendicularly in 
the Evening than in the Morning, that is, if high water happen 
afterthe Sun is paft the Meridian y or in the Tydes betwixt Noon 
and Midnight. But from Michael mas till our Lady da) we find 
• the contrary, the Day- tydes being in that feafon higher by 1 5. 
inches than the Night tydes, or the Tydes between Midnight 
and Noon. And this proportion holds in both, after the gra- 
dual Increafeof the Tydes rifing from the Neap to the high- 
eft Spring , and the like Decreafe of their Height till Neap 
again. 
4. As for the higeft Menftrud Spring-tyde , that is always 
the third after the Full Moon or C hange-day , - if it be not kept 
back by North-Eafl winds , as it hath been, by my own Obfer- 
vatiohs. 
fl Ihave obferved fc'veral times, that it flows hereon the 
Change-day 5 when the Moon is Ea(l-South-Eafl y the Tyde 
flowing in for the fpace of 5. hours, and ebbing 7. hours ^ fo 
that there is an hour and an half difference from the old Tables, 
.which fay, it flowes but to the Moons being Eaft and Weft: 
An Error fo great , that by all means it ought to be redified. 
6. There is fome difference in reckoning the Tydes by the 
Moons Bearing on fuch a point of the Compafs on the Full or 
Change day. Forthen about that tinre only will the Rule hold 
to be exa&Iy true. But from the Change to the Quarters, and 
fom the Full to the Quarters again in the Neap-Tydes, Ihave 
obferved ; it does not flow here by two points of theCompafe 
fo long. But concerning the difference betwixt the New and 
full 
