A. MS. notebook
MISCELLANEOUS NOTEBOOKS (MS 1584-1613)
Call number Am 806; The system of existential graphs is intended to afford a method for the analysis of all necessary reasonings into their ultimate elements. No transformations are permitted except insertions and omissions. The results of series of permissible insertions and omissions. The peculiar formal signs are the fewest with which it is possible to represent all the operations of necessary reasonings.
Call number Am 806