His ircpi OeoXoylas is a dissertation on the knowledge of God.1 Many centuries later Abelard generalized the expression in books which came to bear the titles Theologia Christiana and Introductio ad Theologian.
Flow into Brandywine and Christiana creeks, whose estuary into Delaware river forms Wilmington harbour; those of the S.W.
The Enchiridion ad Laurentium is a slight but interesting sketch of a system, while the De Doctrina Christiana is another lesson in the imparting of Christian instruction, as is also, naturally, the De Catechizandis Rudibus.
In 1529 he brought out his Oeconomia christiana (a treatise in German, on the right ordering of a Christian household) with a dedication to the duchess Sybil of Saxony and a preface by Luther.
The country is rolling, with moderately high hills, moderately deep valleys and rapid streams. West of Wilmington there rises a ridge which crosses the state in a north-westerly direction and forms a watershed between Christiana and Brandywine creeks, its highest elevation above sea-level being 280 ft.
The sparsely populated country afforded a welcome to the fugitive Waldenses, who did something to restore it to prosperity, but this benefit was partly neutralized by the extravagance of the duke, anxious to provide for the expensive tastes of his mistress, Christiana Wilhelmina von Gravenitz.
In connexion with this may be mentioned Collectio nova patrum et scriptorum graecorum (1706), containing some newly discovered works of Athanasius, Eusebius of Caesarea, and the Topographia christiana of Cosmas Indicopleustes.
Hauck, Kirchengeschichte Deutscklands (4 vols., Leipzig, 3rd ed., 1904); Gallia Christiana in provincial eccl.
Inquisitionis reprobantur et in universa Christiana republica interdicuntur).
South of the Christiana there begins another elevation, sandy and marshy, which extends almost the entire length of the state from N.W.