. Mifcellanea Curiofa, 



ax 



But in the Conftru&ion of the 



T lax-yx 



foregoing Froyofition^ the Fluxion of the Or 



ax 



dinate BF, was == — . Therefore 



Sjiax-Yx* 



this Conftru&ion amounts to the fame with 

 that, and confequently the point F is in the 



Catenaria* Q.: E : D. 



COROL 



As in the foregoing Profofition y the Catena- 

 rla is defcrib'd from the length of the Para- 

 bolical Gurve given ; fo in this, the descrip- 

 tion of it depends upon the Quadrature of 

 the Space in which x*y* = a* 2axy z . For 

 a z 



BK or y = - J 



V f lax-A-v 2 



PROP. 



