1
there are ſuch contrarieties of motions in the parts of the
ſtrial Surface, whilſt it turneth round upon its own centre, it is
neceſſary, that in conjoyning this Diurnal Motion, with the other
Annual, there do reſult an abſolute motion for the parts of the
ſaid Terreſtrial Superficies, one while very accelerate, and
ther while as ſlow again. The which is manifeſt, conſidering
firſt the parts about D, the abſolute motion of which ſhall be
extream ſwift, as that which proceedeth from two motions made
both one way, namely, towards the left hand; the firſt of
which is part of the Annual Motion, common to all the parts of
the Globe, the other is that of the ſaid point D., carried likewiſe
to the left, by the Diurnal Revolution; ſo that, in this caſe, the
Diurnal motion increaſeth and accelerateth the Annual. The
contrary to which happeneth in the oppoſite part F, which, whilſt
it is by the common annual motion carried, together with the
whole Globe, towards the left, it happeneth to be carried by the
Diurnal converſion alſo towards the right: ſo that the
nal motion by that means detracteth from the Annual,
upon the abſolute motion, reſulting from the compoſition of both
the other, is much retarded. Again, about the points E and G,
the abſolute motion becometh in a manner equal to the ſimple
Annual one, in regard that little or nothing increaſeth or
niſheth it, as not tending either to the left hand, or to the right,
but downwards and upwards. We will conclude therefore, that
like as it is true, that the motion of the whole Globe, and of
each of its parts, would be equal and uniforme, in caſe they did
move with one ſingle motion, whether it were the meer Annual,
or the ſingle Diurnal Revolution, ſo it is requiſite, that mixing
thoſe two motions together, there do reſult thence for the parts
of the ſaid Globe irregular motions, one while accelerated, and
another while retarded, by means of the additions or
ons of the Diurnal converſion from the annual circulation. So
that, if it be true (and moſt true it is, as experience proves) that
the acceleration and retardation of the motion of the
ſel, makes water contained therein to run to and again the long
waves of it, and to riſe and fall in its extreames, who will make
ſcruple of granting, that the ſaid effect may, nay ought to
ceed in the Sea-waters, contained within their Veſſels, ſubject to
ſuch like alterations, and eſpecially in thoſe that diſtend
ſelves long-wayes from Weſt to Eaſt, which is the courſe that
the motion of thoſe ſame Veſſels ſteereth? Now this is the
moſt potent and primary cauſe of the ebbing and flowing,
out the which no ſuch effect would enſue. But becauſe the
ticular accidents are many and various, that in ſeveral places and
times are obſerved, which muſt of neceſſity have dependance
there are ſuch contrarieties of motions in the parts of the
ſtrial Surface, whilſt it turneth round upon its own centre, it is
neceſſary, that in conjoyning this Diurnal Motion, with the other
Annual, there do reſult an abſolute motion for the parts of the
ſaid Terreſtrial Superficies, one while very accelerate, and
ther while as ſlow again. The which is manifeſt, conſidering
firſt the parts about D, the abſolute motion of which ſhall be
extream ſwift, as that which proceedeth from two motions made
both one way, namely, towards the left hand; the firſt of
which is part of the Annual Motion, common to all the parts of
the Globe, the other is that of the ſaid point D., carried likewiſe
to the left, by the Diurnal Revolution; ſo that, in this caſe, the
Diurnal motion increaſeth and accelerateth the Annual. The
contrary to which happeneth in the oppoſite part F, which, whilſt
it is by the common annual motion carried, together with the
whole Globe, towards the left, it happeneth to be carried by the
Diurnal converſion alſo towards the right: ſo that the
nal motion by that means detracteth from the Annual,
upon the abſolute motion, reſulting from the compoſition of both
the other, is much retarded. Again, about the points E and G,
the abſolute motion becometh in a manner equal to the ſimple
Annual one, in regard that little or nothing increaſeth or
niſheth it, as not tending either to the left hand, or to the right,
but downwards and upwards. We will conclude therefore, that
like as it is true, that the motion of the whole Globe, and of
each of its parts, would be equal and uniforme, in caſe they did
move with one ſingle motion, whether it were the meer Annual,
or the ſingle Diurnal Revolution, ſo it is requiſite, that mixing
thoſe two motions together, there do reſult thence for the parts
of the ſaid Globe irregular motions, one while accelerated, and
another while retarded, by means of the additions or
ons of the Diurnal converſion from the annual circulation. So
that, if it be true (and moſt true it is, as experience proves) that
the acceleration and retardation of the motion of the
ſel, makes water contained therein to run to and again the long
waves of it, and to riſe and fall in its extreames, who will make
ſcruple of granting, that the ſaid effect may, nay ought to
ceed in the Sea-waters, contained within their Veſſels, ſubject to
ſuch like alterations, and eſpecially in thoſe that diſtend
ſelves long-wayes from Weſt to Eaſt, which is the courſe that
the motion of thoſe ſame Veſſels ſteereth? Now this is the
moſt potent and primary cauſe of the ebbing and flowing,
out the which no ſuch effect would enſue. But becauſe the
ticular accidents are many and various, that in ſeveral places and
times are obſerved, which muſt of neceſſity have dependance