of
 Dr. James Musgrave
 Rector of Chinnor, Oxon
(Entries marked with a star are also present in the Huggins List, and so were almost certainly owned by Newton. See the main catalogue page for an overview.)
| * | Rabutin Histoire de Louis XIV, 8vo. | 1700 | 
| * | Ray Synopsis Avium et Piscium, 8vo. | 1713 | 
| Rami Arithmetica et Geometrica, 4to. | 1607 | |
| * | Rami Ulyses et Outinus, unus et idem, 8vo. | 1713 | 
| Ramsay's Travels of Cyrus, 8vo. | 1736 | |
| Randolph's Poems with the Muses Looking Glass, 8vo. | 1652 | |
| * | Ralphson Historia Fluxionum, 4to. | 1715 | 
| * | Raphson Analysis Æquat Univers. et Casini Observ., 4to. | 1690 | 
| Rapin Histoire D'Angleterre 5 Vol, 8vo. | 1729 | |
| Rapin's History of England by Quest. & Answr., 8vo. | 1758 | |
| Ray on the Creation, 8vo. | 1692 | |
| Ray Physico Theolog. Discourses, 8vo. | 1700 | |
| Reeve's Sermons at Waltham Abbey, 4to. | 1661 | |
| * | Reland Antiq. Hebræorum, 8vo. | 1708 | 
| * | Reland de Nummis vet. Hebræorum, 8vo. | 1709 | 
| Religious Courtship with the Appendix, 8vo. | - | |
| Remarks on Dr. More, on thc Apocalypse, &c., 4to. | 1691 | |
| Remonstrances &c. in Parliament 1641 &c., 4to. | 1643 | |
| Republick of Letters 6 Vol., 8vo. | 1728 | |
| * | Retz (Card de) Memoirs, 8vo. | 1723 | 
| * | Reyher de Nummis quibus ex Chym. Metallo factis, 4to. | 1692 | 
| Rhenani Opera Chymica, 8vo. | 1668 | |
| Rhodii Argonautica et Rhodomani Palestinæ Gr. 4to. | 1574 | |
| Rhodii Argonautica Gr., 8vo. | 1541 | |
| * | Rhodii Argonautica Gr. Lat. Hoelzlini, 8vo. | 1641 | 
| * | Ricard Traite General du Commerce, 4to. | 1700 | 
| * | Riccioli Almagestum Novum 2 Tom., F. | 1651 | 
| Richerii Historia Conciliorum, 4to. | 1680 | |
| Ridley of Magnetical Bodies & Motion, 4to. | 1613 | |
| Ridley's View of the Civil & Ecclesiast. Law, 8vo. | 1662 | |
| * | Riplei Opera Omnia Chemica Capel, 8vo. | 1649 | 
| * | Ripley's Hermetico Poetical Works reviv'd, 8vo. | 1678 | 
| * | Roberts's Merchants Map of Commerce, F. | 1700 | 
| Robertson Thesaurus Linguæ Sanctæ, 4to. | 1680 | |
| Robertson Thesaurus Linguæ Græca, 4to. | 1676 | |
| Roe & Wingates Tables of Logarithms, 8vo. | 1633 | |
| Roger's Voyage round the World, 8vo. | 1712 | |
| Rogers on the Articles with other Tracts, 8vo. | 1633 | |
| * | Rohaulti Physica per Newton & Clarke, 8vo. | 1710 | 
| Rolfinchii Chimia in Artis forman redacta, 4to. | 1671 | |
| Roman Forgeries, being an Acct of false Records &c., 8vo. | 1673 | |
| Romish Horseleech, or Charge of Poperty to England, 8vo. | 1674 | |
| * | Ronayne's Algebra, 8vo. | 1717 | 
| * | Roque, La, Voyage dans la Palestine, 8vo. | 1718 | 
| Rosencreutz's Hermetick Romance or Chymical Weddg. 8vo. | 1690 | |
| Rowe (Mrs.) Exercises of thc Heart, 8vo. | 1743 | |
| Rutillii Itinerarium notis Grævii &c., 8vo. | 1687 | |
| Rutherforth's Tryal & Triumph of Faith, 4to. | 1645 | |
| Rulandi Lexicon Alchemiæ, 4to. | 1612 | |
| * | Rulandi Problemata Chymica, 8vo. | 1607 | 
| Rule for finding Easter &c., 8vo. | 1712 | |
| Rushworth's Historl. Collections 8 Vols. large paper, F. | 1721 | |
| * | Roux, Le, Dictionnaire Comique Satyrique &c., 8vo. | 1718 | 
| * | Ruysch Adversaria Anatom. Med. Chirurgica, 4to. | 1720 | 
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