CONIC SECTIONS 



i-y.i . /. 



Fw, 2. 



Fig.4. 



-~r 7i 



7 \ 



E P 



PLlATE CCVJL 



Fl)l. 7. 



Fy.6. / 



V ( 







— -T~^\x 



(■ y r 



J-Y,/. X. 



S-'/j. 20. 



F///J7. 



/'///. 72. 



JYf/. ?J. JU==i 



/■>h. 26 



Fu.22. 



f 



Fy.26 



JM/iM/lr fa .■■-. 



/Cn</* t\ 



