1551 books

astronomical calculations

16th century zoology book by Conrad Gessner

thumb|200px|One of the manuscripts containing One Hundred Chapters The Book of One Hundred Chapters, also called Stoglav () in Russian ("Hundred chapters"), is a collection of decisions of the Russian church council of 1551 that regulated the canon law and ecclesiastical life in the Tsardom of Russia, especially the everyday life of the Russian clergy.