L 430 J 
the Spring may not produce a greater EfFed, when 
that Preffure continues for a longer Time ? 
That Preffure may be faid to produce three EfFeds, 
all of which may, if we pleafe, be confidered as dif- 
ferent from one another. 
1. The Preifure carries the Body thro* a certain 
Space; by which Space the Length of the bent 
Spring is increased, in returning to its natural Situ- 
ation. 
2. The Preffure gives to the Body a certain Quan- 
tity of Motion. 
3. It gives the Body a certain moving Force. 
Now, the firft of thefe EfFeds is greater, when 
the Preffure ads for a longer Time. For, if the Pref- 
fure of a bent Spring, by ading for one Second 
upon the Body 1, carry that Body 1 thro’ the Space 
1 ; the Preffure of the fame, or of an equal Spring 
equally bent, by ading for two Seconds upon the 
Body 4, will carry that Body 4 thro’ the fame 
Space 1. 
Likewife the fecond EfFed is greater, when the 
Preffure continues for a longer Time. 
For, in the Cafe juft now mentioned, the Body 4 
will have twice the Quantity of Motion that the 
Body 1 has ; though thefe two Quantities of Motion 
arife from the Preffure of the fame, or, which is all; 
one, of equal Springs equally bent. 
Why therefore are we take it for granted, or to 
have it impofed upon us by way of Principle or 
Axiom, That the third EfFed is not greater, when 
the Time, in which it is produced by the PrefFure of 
the fame, or equal Springs, is logger, nay, infinitely 
longer l 
But 
