In addition to these increased opportunities of exercise, he also derived much assistance, in the more obscure and uncommon department of his peculiar studies, from the libraries of Rome, and especially from that of the Propaganda. The early elementary books, grammars, vocabularies, catechisms, &c, prepared for the use of missionaries in the remote missions, have for the most part been printed at the Propaganda press: and the library of that institution contains in manuscript similar elementary treatises in languages for the study of which no printed materials existed at that time. To all these, of course, the great linguist enjoyed the freest access ; and it can hardly be doubted that, during the first year of his residence in Rome, he did more to enlarge his stock of words, and to perfect his facility and fluency in conversation, than perhaps in any previous year of his life.