<s>SAGR. </s><s>I do not very well under&longs;tand the que&longs;tion.</s>

<s>SALV. </s><s>I will expre&longs;s it better by drawing a Figure: therefore <lb/>
I will &longs;uppo&longs;e the line A B [in <emph type="italics"/>Fig.<emph.end type="italics"/> 3.] parallel to the Horizon, <lb/>
and upon the point B, I will erect a perpendicular B C; and after <lb/>
that I adde this &longs;launt line C A. </s><s>Under&longs;tanding now the line C <lb/>
A to be an inclining plain exqui&longs;itely poli&longs;hed, and hard, upon <lb/>
which de&longs;cendeth a ball perfectly round and of very hard matter, <lb/>
and &longs;uch another I &longs;uppo&longs;e freely to de&longs;cend by the perpendicular <lb/>
C B: will you now confe&longs;s that the <emph type="italics"/>impetus<emph.end type="italics"/> of that which de <lb/>
&longs;cends by the plain C A, being arrived to the point A, may be <lb/>
equal to the <emph type="italics"/>impetus<emph.end type="italics"/> acquired by the other in the point B, after <lb/>
the de&longs;cent by the perpendicular C B? <lb/>
<arrow.to.target n="marg44"></arrow.to.target></s>

<s><margin.target id="marg44"></margin.target><emph type="italics"/>The impetuo&longs;ity of <lb/>
moveables equally <lb/>
approaching to the <lb/>
centre, are equal.<emph.end type="italics"/></s>

<s>SAGR. </s><s>I re&longs;olutely believe &longs;o: for in effect they have both the <lb/>
&longs;ame proximity to the centre, and by that, which I have already <lb/>
granted, their impetuo&longs;ities would be equally &longs;ufficient to re-carry <lb/>
them to the &longs;ame height.</s>

<s>SALV. </s><s>Tell me now what you believe the &longs;ame ball would do <lb/>
put upon the Horizontal plane A B?</s>

<s><arrow.to.target n="marg45"></arrow.to.target></s>

<s><margin.target id="marg45"></margin.target><emph type="italics"/>Vpon an horizon <lb/>
tall plane the move <lb/>
able lieth &longs;till.<emph.end type="italics"/></s>

<s>SAGR. </s><s>It would lie &longs;till, the &longs;aid plane having no declination.</s>

<s>SALV. </s><s>But on the inclining plane C A it would de&longs;cend, but <lb/>
with a gentler motion than by the perpendicular C B?</s>

<s>SAGR. </s><s>I may confidently an&longs;wer in the affirmative, it &longs;eem <lb/>
ing to me nece&longs;&longs;ary that the motion by the perpendicular C B <lb/>
&longs;hould be more &longs;wift, than by the inclining plane C A; yet ne <lb/>
verthele&longs;s, i&longs; this be, how can the Cadent by the inclination ar <lb/>
rived to the point A, have as much <emph type="italics"/>impetus,<emph.end type="italics"/> that is, the &longs;ame de <lb/>
gree of velocity, that the Cadent by the perpendicular &longs;hall have <lb/>
in the point B? the&longs;e two Propo&longs;itions &longs;eem contradictory.</s>

<s><arrow.to.target n="marg46"></arrow.to.target></s>

<s><margin.target id="marg46"></margin.target><emph type="italics"/>The veloeity by the <lb/>
inclining plane e <lb/>
qual to the veloci <lb/>
ty by the perpendi <lb/>
oular, and the mo <lb/>
tion by the perpen <lb/>
dicular &longs;wifter <lb/>
than by the incli <lb/>
nation.<emph.end type="italics"/></s>

<s>SALV. </s><s>Then you would think it much more fal&longs;e, &longs;hould I <lb/>
&longs;ay, that the velocity of the Cadents by the perpendicular, and <lb/>
inclination, are ab&longs;olutely equal: and yet this is a Propo&longs;ition <lb/>
mo&longs;t true, as is al&longs;o this that the Cadent moveth more &longs;wiftly by <lb/>
the perpendicular, than by the inclination.</s>

<s>SAGR. </s><s>The&longs;e Propo&longs;itions to my ears &longs;ound very har&longs;h: and <lb/>
I believe to yours <emph type="italics"/>Simplicius<emph.end type="italics"/>?</s>

<s>SIMPL. </s><s>I have the &longs;ame &longs;en&longs;e of them.</s>

<s>SALV. </s><s>I conceit you je&longs;t with me, pretending not to compre <lb/>
hend what you know better than my &longs;elf: therefore tell me <emph type="italics"/>Sim <lb/>
plicius,<emph.end type="italics"/> when you imagine a moveable more &longs;wift than ano <lb/>
ther, what conceit do you fancy in your mind?</s>

<s>SIMPL. </s><s>I fancie one to pa&longs;s in the &longs;ame time a greater &longs;pace <lb/>
than the other, or to move equal &longs;paces, but in le&longs;&longs;er time.</s>

<s>SALV. </s><s>Very well: and for moveables equally &longs;wift, what's <lb/>
your conceit of them?</s>

<s>SIMPL. </s><s>I fancie that they pa&longs;s equal &longs;paces in equal times.</s>