16 CATALOGUE OF NEWTON PAPERS. 



34. Table of contents, with a chapter de virga mercurii. 



35. A collection of nine papers in a cover (originally ten), con- 

 sisting of notes and extracts, the 10th paper, of ancient hieroglyphics, 

 missing. 



36. Three odd papers on the Regimen. 



(*) 



1. A common-place book, in paper cover, containing notanda 

 and sententise notabiles from various alchemical authors. Greater 

 part blank. 



2. A list of chemical authors. 



3. Several Indices Chemici. 



4. De peste. Van Helmont. 



5. Note as to Terra lemna, and Terra sigillata, with Leibnitz's 

 address. 



6. List of books on Chemistry with shelf-marks (perhaps in 

 Trinity Library). 



7. An alchemical recipe headed " Roth Mallor's work." On the 

 back of the folio a recipe for making aqua regia from calcium 

 chloride and aqua fortis, and for another menstruum which seems to 

 be a solution of antimony chloride. The 2nd Period (a part of the 

 foregoing recipe), but not in Newton's hand. 



8. Notes of reference to some alchemical works. Diagrams of 

 furnaces. Sundry recipes for making clay for furnaces and lutes. 

 Note that "for rectifying spirits and ethereal oyles, nothing is 

 better than the bladder of an ox or hogg," and a recipe for calcining 

 gold which seems only getting it into a fine powder. 



9. Dr Goddard's experiments of refining gold with antimony, 

 extracted from Phil. Trans. 



10. Part of a letter ordering some one to procure for Newton 

 from Hamburg various metallic ores. On the back a note about 

 something being true when angles due to difference of refraction are 

 taken small enough, and a recipe for some plaster. 



11. Notes of stannic chloride, and some chemical reactions. 



12. An alchemical experiment, not in Newton's hand, which 

 seems part of some larger work. There is a note in Newton's 

 hand on it relating to quantities obtained in some distillation. 



