At the beginning of the following century two German scholars, familiar
with Hervas' writings, noted the 1593 Doctrina. Franz Carl Alter, [29]
in his monograph on the Tagalog language, printed the Ave Maria from
the text which had appeared in 1785, and Johann Christoph Adelung,
[30] in his _Mithridates_, a comprehensive study of languages,
included the Tagalog Pater Noster from the _Saggio pratico_ of
1787. The latter also listed in a short bibliography of the Tagalog
language the Doctrina of 1593, giving exactly the same information
about it that Hervas had. Neither of these men apparently saw a copy
of the book, limiting themselves to extracts from Hervas, but they
perpetuated an earlier reference of the utmost importance.

Shortly after the two Germans published their notices of the 1593
Doctrina an entry appeared of a book printed at Manila in 1581. José
Mariano Beristain y Sousa, a learned Mexican writer, issued in
1819-21 a bibliography of Spanish-American books, in which he listed
alphabetically the authors, giving a short biography of each and
adding a list of his works. Under Juan de Quiñones we find:


"'Arte y Vocabulario de la Lengua Tagala,' Imp. en Manila,
1581." [31]


No specific authority is given for this entry, but in his sketch of
the life of Quiñones Beristain cited as sources, Juan de Grijalva,
Nicolás Antonio, Gaspar de San Agustin, and José Sicardo. It would
seem logical that one of these must have mentioned such a work as
printed in Manila in 1581, but in tracing down the sources no such
precise notice is found.