Mifiellanea Curtofa. 339 



A A A 

 (as by Divifion will appear) - — -H — H- — -5ca 

 rr / A /< a i<. 3 



That is (in our p relent Cafe) — -+* -~~ -f- 



m WW m* 



&c. And/o the Aggregate will be -L"Zf! 



WW 



■+ — -=- &e. ~ . 



m n 



And Jhus as to the Line of Proje&ion, in 

 which (fecluding the Refinance, the Motion is re- 

 puted uniform ; difpatching equal Lengths in e- 

 qual Times. Confider we next the Line of De- 

 Icent. 



%l In the Defcent of Heavy Bodies, it is 

 fuppofed that to each Moment of Time, there is 

 luperadded a new Impulfe of Gravity to what 

 was before: And each of thefe, fecluding the 

 Consideration of the Air's Refinance, to proceed 

 equally (from their feveral beginnings) through 

 the fucceedmg Moments. As (in the erect Lined 

 i I i 1, &c. 1 1 1, &c. 1 1, (3c. 

 i 9 &c. and Co continually, as in the i 

 Line of Projection. ! t 



24. Hence arifeth (in the tranf i i i 

 verfe Lines) for the firft Moment n u 

 1, for the fecond I -+ i, f or the (3c. ' 

 third i+i + i, and fo forth, 

 in Arithmetical Progreffion ; As are the Ordi- 

 nate in a Triangle, at equal diftance. 



%f. And fuch are the continual Increments of 

 the Diameter, or of the Ordinates in the exterior 

 Parabola, anfwering to the interior Ordinates, 

 or Segments of the Tangent, equally increafina: 

 as is known, and commonly admitted, 



£ * a6Mf 



