[Footnote 9: Ruth Shepard Granniss, "Biographical Sketch," _The Reformed Librarie-Keeper_ (Chicago: A.C. McClurg & Co., 1906), 31-32.] [Footnote 10: See "John Durie's _Reformed Librarie-Keeper_," 83.] [Footnote 11: Richard Garnett, "Librarianship in the Seventeenth Century," in his _Essays in Librarianship and Bibliography_ (New York: F.P. Harper, 1899), 187.] BIBLIOGRAPHICAL NOTE _The Reformed Librarie Keeper With a Supplement to the Reformed School_ (1650) is reproduced from the copy in the Folger Shakespeare Library (Shelf Mark D2882/Bd w/D2883). A typical type page (p. 7) measures 107 x 56 mm. Not reproduced here are two additional parts in the original volume: _An Idea of Mathematicks_ by John Pell and _The description of one of the chiefest Libraries which is in Germanie_, attributed either to Julius Scheurl or J. Schwartzkopf. THE REFORMED LIBRARIE-KEEPER With a Supplement to the Reformed-School, As subordinate to Colleges in Universities. _BY_ JOHN DURIE. Whereunto is added I. An idea of _Mathematicks_. II. The description of one of the chiefest Libraries which is in _Germanie_, erected and ordered by one of the most Learned Princes in _Europe_. _LONDON_, Printed by _William Du-Gard_, and are to bee sold by _Rob. Littleberrie_ at the sign of the _Unicorn_ in Little _Britain_. 1650. To the Reader. _Learned Reader!_ _These Tracts are the fruits of som of my Sollicitations and Negotiations for the advancement of Learning. And I hope they may in time becom somwhat effectual to rais thy Spirit to the exspectation of greater things, which may bee raised upon such grounds as these. All which are but preparatives towards that perfection which wee may exspect by the advancement of the Kingdom of Christ, wherein the Communion of Saints, by the graces of the Spirit, will swallow up all these poor Rudiments of knowledg, which wee now grope after by so manie helps; and till then in those endeavors I rest in the Truth._ Thy faithfull and unwearied servant SAMUEL HARTLIB. A SUPPLEMENT TO THE _Reformed School_. _Loving freind!_