At the beginning of the 20th century, two proposals for a reform of the Roman mass and its eucharistic prayer (canon missae) were published. Both new rites were in Czech and aspired to replace the Roman Latin rite in their respective new ecclesiastical communities.
František Iška prepared his rite for an old catholic community in Prague and Alois Tuháček, relying on Iškavs proposal, did the same for the just established Czechoslovak church. In this article, attention is particularly paid to the eucharistic prayers created for those new rites.
To reform the Roman canon, both authors were intentionally using the Liturgy of John Chrysostom.