Title
- Relatione del stato di Milano1
- Relationi de diversi ambasciatori1
- Rent1
- Reply to accusations made by Puritan ministers1
- Report on Switzerland1
- Responsorium1
- Risālah1
- Risālah dar hayʾat1
- Risālah fī al-ʻamal bi-asʹhal ālah min qibal al-nujūm1
- Risālah fī tafsīr qawlihi taʻālá li-dulūk al-shams wa-al-adillah al-handasīyah wa-fīhā samt al-qiblah1
- Ritual1
- Rūḥ al-shurūḥ1
- Sad-dar1
- Salt registers1
- Scale of perfection1
- School miscellany1
- Schwebell zuem Pulffer unnd Feuuerwercken zue beraitten1
- Scientific texts1
- Scritture de signori Medici1
- Seals of the planets1