Jan Krejčí

Jan Krejčí (28 February 1825 Klatovy[1] – 1 August 1887 Prague) was a Czech educator, geologist, journalist and politician.

He wrote the first Czech textbook of geology in 1860, whose revised edition was released again in 1877 under the title Geologie čili nauka o tvarech zemských se zvláštním ohledem na krajiny Československé.

He went to the German general school and raised his relationship to Czech from Josef Jungmann, who was his teacher at that time.

He was also attracted by the literature, participated in the collection " Perly české " and in 1859 – 1860 he contributed to the almanac " Máj ", edited by Vítězslav Hálek.

The publications Všeobecné a horopisné poměry, jakož i rozčlenění křídového útvaru v Čechách (1870) are of great importance.

He also wrote a comprehensive textbook on geology (1853), a description of Czech coal seams (1853), characteristics of the nature of ores and metals (1869) and others.

His house was demolished during the construction of a tunnel, the memorial plaque was installed before the World War I on the wall.

With the support and with the approval of the State Institute of Monument Care, a memorial plaque was placed on the outer wall of the castle at the entrance to Vyšehrad.