34-2 Mifcellanea Curiofa. 



LWl, MN, Sec. that is as—/, &c. be fitted 



Ordinates (at a given Angle) whofe Increments 



areas FL, FM, FN, &c. that is, as — g, &c. 



The Curve anfwering to the Compound of thefe 

 Motions, is that wherein the Project is to move. 



38. This Curve (being hitherto without a 

 Name) may becall'd Lima Projctlorum ; the Line 

 of Projects, or things projected ; which relem- 

 bles a Parabola deform'd. 



39. The Celerity and Tendency, as to each 

 Point of this Line, is determined by a Tangent 

 at that Point. 



40. And that againft which it makes the grea- 

 ter!: Stroke or Percuiiion, is that which (at that 

 Point) is at right Angles to that Tangent. 



41. If the Projection (at 5 x7 ) be not infi- 

 nitely continued, but terminate (fuppofe) at N, 

 fo that the lad Term in tie firft Column cr Se- 

 ries ere£r, be a j and confequently in the fecond, 

 tna j in the third, mm a, Sec. (each Series ha- 

 ving one Term fewer than that before it.-) Then 

 (for* the fame Reafons, as at 5 the Aggre- 

 gates of the feveral Columns (or erecT: Series) 



I 4 1— >ma 1 — mma Jr c , 



will be - , , — i and fo forth, 



n n n 



till (the Multiple of a becoming =1) the Pro- 

 grellion expire.-* 



4x Now all the Abatements here, a, ma, 

 mma, &c. are the fame with the Terms of the 

 firft Column taken backward. For a is the 

 laft, m a the next before it ; and fo of the 

 reft. 0- 



45. And 



