C 956 ] 
1 i 11 n in 
primae A et A ; fecundas A et Aj tertias A et A ; 
III IV 
quartae A et A, &c. 
Radius luminis, veniens a pundto A, refringatur in; 
1 11 in 
omnibus his lentibus in pundtis L, L, L, L, &c.. 
1 u hi 
pergens fecundum curfum ALL L,L, et poft fin- 
1 
gulas refradtiones occurrat axi A O in pundtis B, B, 
II III I II III IV 
B, B, &c. aberrans a focis A, A, A, A, &c. lon- 
1 11 1 111 11 iv m 
gitudinibus A B, A B, A B, A B, &c. Quaeruntur 
jam has aberrationes. 
1 11 hi 
Lentium P, P, P, P, &c. diftantiae fbcorum prin- 
1 a hi 
cipalium dicantur refpedtive P, P, P, P, &c. et in- 
dices Xy x> x , x , &c, Diflantiae focorum conjugar 
torum a fuis refpedtive lentibus Tint : pro lente prima 
P, PArzrA, P A zr B j pro lente fecunda P, P A 
I I II I II II II U II III 
= A, P A = B 5 pro lente tertia P, P A = A, PA 
11 
hi 111 111 
III iv 
hi 
= B ; pro lente quarta P„ P A — A, et P A = B 3 
et ita porro : ponatur praeterea P L, five diftantia 
pundti incidentias in primam lentem ab axe = L, et 
1 1 
1 1 11 1 11 hi 
. r>r A _ A. A _ £1“ A. A. A _ 
ent PL = sj x L, PL = — r x L, PL = r — rr x L, 
15 B . B B . B . B 
et ita porro, . 
J, 
