254- 



DE TELESCOPIIS 



Intcrualluin. 

 ABrza 



Lentis difl:. fbci femid. apcrt 

 in A . . . a; Aa~A' 



in C . . ;^aa; C^= ~x; CD^ik—i)z 



inE . . ^z^ Ee=z'^z^ EOzzi^~,z. 



Hyp. II. w;>3 

 ^— 3^ ;2— 2^ Aa — Tsi AB-ct 



jfe- 

 Hypoth. I. »2 > 4 

 k=2; zzil; Aa—%^ ABzna 



/>- - dU^i Ccz:j,iCBz:i 

 f^^z: \; T>dz:l,i DE=2 



////_ 



p////_- 



Cp = ,-;^ feu 0:=:^ n.in. 



r-7^.«i c 



. 3 



■SS 



; CD:=4 

 Drt'— ^ ; DE-4 



Ozrr^^feu (pr.-sP min. 



////. 



Hypoth. III. /«>3^ 11 Hyp. IV. w>2i- 



Jferr+i z — 'ii A^r:^,^ ABzraU—S^ 2; — :; Atf^l",; ABra 



p' - s^a? BZ?z|.°,;BC:i;Ha/ — ^a^.a; B^ — /,. |i BC-^.a 



// — 



I' 11 71 -1-6 



P - S 1 



,/. // — 



1 



p,. //_ 



(D: 



«a^Cfrra; CD-V 

 D^=:i; DEni 

 Eezi\', EO.-^ 

 (cu Cp^'-^ min 



Hypoth. V. w>2! 



P''- .-^««iCr^/a^ CD=7 

 p'''— \\ Ddzz^ ,- DErft 

 p''''— 1 ,- E^-i; EOrJ 



Cj)z=.;m fcu (pzr^ 



min 



Hyp. VI. 



W>2j 



/:z=(Ji 5;=:;^; ^^ = ^0^ AB = a7:=i:7i z — {; Aa — "^^; AB = tt 



aiB^r^r-^BC:3^a/ - ^^a-, Bb-U.l-BC-U 



p'^- 7^«ai C^ = ,^; CD=:io 

 p'''- U T)^-=ii DEr2 



r' :^~,a;CczU CB-i 

 P'"':^ ^;; D^r:.;-DEi:2 

 ^'■"- I ; E^ri; EOi:f, 



Cp — r^, fcu Cl) — ~ min, 



^////_- 



♦ 1 



EO-; 



Cp=7^ fcu Cp-— i mia 



