In Calderon’s _Comedias de Capa y Espada_,[532] the plots are usually of so complicated a nature, that no reader except a Spaniard, habituated to this sort of mental exercise,[533] can on a first perusal seize and follow the various threads of the intrigue, by the artful entanglement of which the principal characters of the piece are repeatedly plunged from one unexpected embarrassment into another. Calderon particularly excelled in the accumulation of surprises, in connecting one difficult situation with another, and in maintaining undiminished the strongly excited interest to the close of the piece. But in order to render this task the easier, he paid still less attention than Lope de Vega to probability in the succession of the scenes; and his characters make their entries and their exits just as it happens to suit the convenience of the poet. The Spanish public was, however, disposed to pardon every improbability of this kind, which gave rise to some new situation full of dramatic truth. Calderon appears to have estimated the merits of his dramas of intrigue, in proportion to the effect produced by the situations; and in this respect he was the more an inventor in proportion as he introduced the less variety into his characters. In all Calderon’s comedies of intrigue, the dramatis personæ are the same individuals under various names. Two or three ladies of fashion, two or three lovers, an old man, a few waiting maids, a few male servants, and among these last, one who acts as the _gracioso_, or buffoon; such are the standing characters with which Calderon usually contented himself in his sphere of dramatic composition. The motives on which the plot turns are a licentious gallantry, in which no moral interest is permitted to mix, and a point of honour which gives rise to incessant contests. On the slightest cause of offence swords are drawn, and when passion rages, even daggers are employed. Romantic accessaries are found in wounds, and murders, though the latter, it is true, are not quite so frequent as the former. Among the other passions the fury of jealousy is conspicuous; and in order to bring this passion into play, the author avails himself of disguises, concealments, mistakes of persons, houses or letters, and occasionally some particular local circumstance, such for instance, as the secret door, which appears to be a cupboard, in the lively drama of _La Dama Duende_, (The Fairy Lady.) There is also no want of night scenes in Calderon’s pieces of intrigue. But however astonishing may be the variety of the situations which he has created out of this uniformity of plan, yet they cannot long satisfy a cultivated taste which requires a nobler kind of variety.