Teplice spa doctor TL Richter publishes an extensive publication in Prague about Teplice spa springs. This publication is very popular and attracts many other travelers and scientists. In the book, a special chapter is dedicated to Bílina and its springs. He describes that a large number of Teplice spa guests visit the spring forest park in Bílina after lunch and drink Bílina sour with wine and in other ways. It also describes the production of Zaječická bitter salt and its use.