This diploma thesis continues in my bachelor work. It´s topic was the analysis of three preachments by Daniel Nitsch from the collection called Berla královská Jezu Krista (1709). The purpose of the task was to make an analysis of phonetic appearances in these preachments and to find out the presence of spoken components in author´s language. The topic of my diploma thesis is the morphological analysis of the preachment called Já hlas volajícího na poušti by the same writer. There will be observed especially searched appearances different from the present Czech. This research might continue with the analysis of the composition or stylistics. The work is divided into two parts ? the theory and the research. The first one deals with the life and work of Daniel Nitsch, the brief charakteristics of the baroque period, the definition of the baroque Czech, the progress of humanism and baroque grammars, level of the contemporary language and the orthografical codification of humanism Czech. The research includes the morphological analysis of the text and the statistic formulation of the number of searched appearances. The purpose of the analysis is to find out the level of Czech language at the beginning of the 18th century on the base of the findings and graphic data.