In the binding of the book, Bruckner to his surprise found eighteen long strips. After putting them together, it turned out that they contained one whole, and five incomplete sermons. They were brought back to Poland in 1925. During World War II, the Holy Cross Sermons were taken to Canada for safekeeping. They are now preserved at the National Library in Warsaw (#8001), and their photocopy may be seen at The Digital National Library Polona (See electronic version of the Holy Cross Sermons). The sermons, on the occasions of Church holy days, comprise fragments of five texts and one complete sermon (for St. Catherine's Day). Written on parchment, they had been cut into thin strips and used to reinforce the binding of a 15th-century Latin manuscript. The fifteen strips, put together by Bruckner, make one sheet (117 × 173 mm), and the remaining three strips make the bottom of a second sheet. Linguistically, the Holy Cross Sermons reflect an older stage of the language than the 14th century, the manuscript being a copy of original sermons composed some time from the end of the 13th century. They manifest a variety of linguistic archaisms, for instance:  1) Hard-stem declension of the pronoun "*tъnъ" 'this one': Nom. sg. "ten", Gen. sg. "togo", Dat. sg. "tomu";  2) Aorist and Imperfect:  - 1 sg. aor. "widziech" (cf. Lat. perf. "vidi") < PSl. "*viděti" 'to see, to look', "*viděxъ" 'I saw, I looked (at); I have seen, I have looked (at)';  - 3 sg. aor. "postawi" (cf. Lat. perf. "posuit") < PSl. "*postaviti" 'to place', "*postavi" 'he/she/it placed, has placed';  - 3 pl. aor. "pośpieszychą się" (cf. Lat. perf. "venerunt") < PSl. "*pospěšiti" 'to go, to go somewhere', "*pospěšixǫ" 'they went, they went somewhere, they went out';  - 3 sg. impf. "biesze" (cf. Lat. impf. "erat") < PSl. "*byti" 'to be', "*běaše" 'he/she/it was';  - 3 sg. impf. "siedziesze" (cf. Lat. impf. "sedebat") < PSl. "*sěděti" 'to sit', "*sěděaše" 'he/she/it sat, was sitting'.