The clause containing the condition is called the PROTASISs ;
the clause containing the conclusion is called the APoDOSIS : —
si qui exire volunt [prorasis], cOnivére possum [apoposis] (Cat. ii. 27), if
any wish to depart, I can keep my eyes shut. _
si est in exsilid [prorasis], quid amplius postulatis [aroposis] (Lig. 13), if
he is in exile, what more do you ask?
It should be carefully noted that the Apodosis is the main clause
and the Protasis the dependent clause.
a. The Protasis is regularly introduced by the conditional particle
si, if, or one of its compounds.
Nortr. — These compounds are sin, nisi, etiam si, etsi, tametsi, tamenetsi (see Condi-
tional and Concessive Particles, p. 138). An Indefinite Relative, or any relative or


concessive word, may also serve to introduce a conditional clause: see Conditional
Relative Clauses (§§ 519, 542) ; Concessive Clauses (§ 527).
b. The Apodosis is often introduced by some correlative word o1
phrase: as, ita, tum (rarely sic), or eA condicidne etc. : —

ita enim senectiis honesta est, si sé ipsa défendit (Cat. M. 38), on this condi-
tion is old age honorable, if it defends itself.
si quidem mé amaret, tum istuc prddesset (Ter. Eun. 446), if he loved me,
then this would be profitable.
sic scribés aliquid, si vacabis (Att. xii. 38. 2), if you are (shall be) at leisure,
then you will write something.
