The Publication I cited, correctly spelt "Amts-Blatt der Koniglichen Breslauschen Regierung" can be viewed at www.europeana.eu. The relevant issue, No. 45, dated 16-Nov-1814 can be downloaded as a pdf file from
Pages 17 to 63 of the pdf contain the names of 3755 Silesian Jewish citizens with their Kreis and Ort (district and place).
As it happens, my 3-greats-grandfather is not listed, but his presumed brothers are, with the Polish spelling of their surname (Kaczinsky instead of Katschinsky), living in Sohrau.
I can confirm that there are some entries for Langendorf, Kreis Tost. Wikipedia suggests that Langendorf only became part of Kreis Neisse in 1816.