18 CATALOGUE OF NEWTON PAPERS. 



20. Out of ' La Lumiere sortant des Tenebres ' [above, no. 6], 

 and commentary thereon (1 f.), but incomplete. 



21. Fragment out of some treatise with pictures no beginning 

 or end. 



22. Recipes for lutes, with some addresses on the back. 



23. Recipes for some alchemical medicines, with address of a 

 druggist. 



24. Other alchemical operations, one a translation, and one not 

 in Newton's hand. 



25. Abstract of Yarworth's " Processus " incomplete, extending 

 to Chap. v. 



26. An alchemical tract entitled " Manna," not in Newton's 

 hand, but with additions and notes at the end in his hand. 



27. Recipe for Regulus Martis; on the back some arithmetical 

 calculation. 



28. Copy (not in Newton's handwriting) of a letter from Mr 

 John Casswell, Oxford, Oct. 14, 1694, to Mr John Flamsteed, giving 

 an account of some observations on magnetism. 



29. Account of a method for making aqua fortis and for re- 

 fining silver, in Conduitt's hand. 



30. "Experimentum Bellini." 



31. Theatrum Astronomies Terrestris. 



Packet marked VI. containing the following papers on Alchemy : 



1. Some alchemical receipts, not in Newton's hand. 



2. Queries, not in Newton's hand. 



3. A medicine to transmute copper, ditto. 



4. Alchemical receipts, ditto. 



5. To make artificial pearl, ditto. 



6. No. 73. An incomplete copy (76 pp.) of Yarworth's 

 "Processus," not in Newton's hand. 



N.B. The several copies of Yarworth are not identical. 



