Origin of the work:
1612 – 1656
Never printed; lost in the fire of Leszno
Comenius began to collect the material for his “complete dictionary, detailed grammar, elegant idioms and emphatic adages” as early as during his time at Herborn, “in order to master his tongue,” as Petrus Montanus wrote. He continued constantly in the work, collecting and classifying, and when the Latin-Czech dictionary was prepared for printing it was destroyed in the fire of Leszno in 1656. The structure of the dictionary and its purpose are referred to in chapter XXII of the Didaktika468, in which Comenius writes “how easily, deftly and powerfully it teaches the language”. The loss of the dictionary was felt by Comenius as a catastrophe.
For further study, see also:
J. A. Komenský, List Petru Montanovi. In: J. A. Comenii Opera omnia, vol.1. Prague 1969, p19
J. V. Novák & J. Hendrich, Jan Amos Komenský, jeho život a spisy. Prague 1932, p24
B. Ryba, O Komenského neznámém spisku „Kořenové jazyka českého“. In: Listy filologické 73, 1949, pp173-178