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Tartaglia's record of his conversation with Messer Juan Antonio, the emissary employed by Cardan, and of all the subsequent details of the controversy, is preserved in his principal work, Quesiti et Inventioni Diverse de Nicolo Tartalea Brisciano, a record which furnishes abundant and striking instance of his jealous and suspicious temper.
"Non ha datta fora tal opera come cose composto da sua testa ma come cose ellette raccolte e copiate de diverse libri a penna." Quesiti et Inventioni, p. 127. Perhaps he wrote them down as an apology or a defence against the storm which he anticipated as soon as Tartaglia should have seen the new Algebra.
Ibi persenex decessit." Papadopoli, Hist. Gymn. Pata., ii. p. 210. This work is the chief authority for the facts which follow. The edition referred to is that of Venice, 1546. Quesiti et Inventioni, p. 115.