[6.] Now MS. Harl. 1, “Johannes Dee, 1557.” A portion of this volume formerly belonged to John of London.
[7.] The only copies of this work now known are in the Bodleian Library, but I have not succeeded in tracing this one.
[8.] Otho, B. iv. vid. Tann. Bibl. p. 518. This MS. was destroyed in the fire of 1731.
[9.] Now in MS. Vespas. A. ii. art. 12, “Joannes Dee, 1555.” This is an extremely curious and valuable tract in the history of optical science, and is similar to the curious treatise by Gogava De speculo ustorio. The focus of the parabola is here for the first time indicated, a circumstance which has escaped the notice of scientific historians.
[10.] The only MS. of Robert of Gloucester’s poem, answerable to this description, is in the University Library, Cambridge.
[11.] This MS. is now in the library of the Ashmolean Museum, No. 846.
[12.] Now MS. Harl. 200, “Joannes Dee, 1575.”
[13.] Now C.C.C. Oxon. No. 235.
[14.] Extract from this article in MS. Bernard, 3467, where there are other extracts from MSS. in Dee’s possession.
[15.] Now MS. Ashm. No. 424. From a MS. note it appears that, in 1564, the Fellows of Peterhouse, at Cambridge, presented this book to Dr. Dee, in exchange for various printed books which he gave to their library. Vid. MS. C.C.C. Oxon. No. 191.