CHRISTIAN LUDWIG**, an eminent architectural writer of Germany, was born at Leipzig on the 12th of December 1756. In his youth he had his mind familiarized with pictures, cabinets of medals and minerals, in his father's collection, which was the means of forming the lad's taste for those ultimate walks which he found so congenial. When pursuing his studies at the university he directed his attention mainly to jurisprudence. He likewise wrote poems, tales, and romances. In 1784 he took the degree of Doctor of Laws, and in 1786 appeared his first architectural work entitled *Versuch über die Baukunst*. In 1792, the same year in which he was made a member of the council of Leipzig, he brought out his *Geschichte der Baukunst der Alten*, and shortly after appeared his *Encyclopädie der bürgerl. Baukunst*, in 5 vols., 1792–98. Passing over his specimens of modern architecture as feeble and generally insipid, we come to a really excellent work published in 1820, called *Altdeutsche Baukunst*, which contributed in a large degree to the diffusion of that taste for medieval art which is so general in Germany at the present day. His *Geschichte der Baukunst* appeared in 1827. After having contributed various articles to different journals and to Ersch and Gruber's *Encyclopädie*, and having produced other works of more or less merit, Stieglitz died in his native town on the 17th of July 1836.

**STIFEL.** See Algebra.