The great educational works of Komenský, on which his principal claim to posthumous fame is founded, but which do not perhaps require lengthy mention in a work that deals mainly with literature, were principally written during the author's first prolonged stay at Lissa. Though the order in which Komenský's educational works were written cannot always be ascertained with certainty, there is little doubt that one of the earliest was the _Informatorium Školy Mateřské_ (= instruction for mother-schools).[112] It first appeared in Bohemian in 1628. The little book deals with the earliest instruction which a child receives from its mother. It soon obtained great popularity, and was speedily translated into German, Latin, and English. Anticipating Rousseau, Komenský lays great stress on the duty of mothers to nurse their children. The _Instruction for Mother-Schools_ is still much read in Bohemia, and some of the regulations contained in it have been adopted for the modern "Kindergarten." Many other educational works of Komenský appeared in rapid succession during his stay at Lissa. The most valuable of them is the _Didactica Magna_, which, like the _Informatorium_, was originally written and first published in Bohemian. Komenský here establishes four degrees of education: the mother-school, the vernacular school, the Latin school or gymnasium, and the academy or university. The earliest education in Germany and Austria is, except in the case of the Kindergarten, still left to the mother's own discretion; but it is interesting to note that the three other divisions of educational establishments suggested by Komenský are almost exactly in accordance with the present system of education in these countries. It is beyond the purpose of this book to give a detailed account of Komenský's educational theories. I must refer those who are interested in the subject to Mr. Keatinge's excellent introduction to his recently published English version of the _Didactica Magna_, which I have already mentioned. The writer here gives us a concise but very clear sketch of these theories.