Dobrovský was entirely devoid of the enthusiasm for the national language that animated Jungmann, Kollar, Šafařik, Palacký, and the minor writers of the first half of the present century. He was, on the other hand, a philologist of the highest rank. Not only the Bohemians, but all Slav races, are indebted to him for his studies on Slav philology, a subject which at that period, when even in Russia the national language had to a great extent given way to Latin, French, and German, was absolutely uncultivated. Of his works we may mention the (German) "Detailed Grammar of the Bohemian Language" (_Ausführliches_ _Lehrgebände der Böhmischen Sprache_). This work has become the model of all Bohemian grammars that were published subsequently, as well as of those of other Slav nationalities which have recently attained to the dignity of possessing written languages. The book was first published in 1809, and again in an enlarged form in 1818. Dobrovský's "History of the Bohemian Language and its Older Literature" (_Geschichte der Böhmischen Sprache und aeltern Literatur_) first appeared in 1792, but subsequently so completely rewritten, that when it was republished in 1818 it appeared almost a new work. The book has become somewhat antiquated and incomplete, as so many Bohemian books have been rediscovered since it appeared, but it still has considerable value. While these and other works of Dobrovský were written in German, he employed the Latin language for his _Institutiones Linguæ Slavicæ Veteris_. In this, his most important work, Dobrovský, as in his grammar, paved the way for later workers. The _Institutiones_ have been the foundation of the work of the many important Slav philologists of the present century.