AND ON LOGIC IN GENERAL. 



227 



I noticed this in the first examination, I coiild not have accepted, as a formal component of that 

 system which rests entirely on explicit announcement of every quantity, a form in which the 

 semi-copular, semiquantitative word " no " is used. 



Lastly, in proof that I might have avoided the misrepresentation, my critic referred me to 

 certain mnemonic verses which he had published in 1847, of which the first stanza is 



A it affirms of this, these, all, 

 Whilst E denies of any : 

 I it affirms, whilst O denies, 

 Of some (or few or many). 



But it is clear that, all other things put together with this, I could only look upon 

 any as preferred for the convenience of rhyming ; to say nothing of the word any referring 

 only to the subject. 



Thus I have, I think, established a reasonable right, then existing, to assume the 

 'extensive maximum undivided' as intended to be expressed by the word all, wherever and 

 however it occurred. 



I trust I have now done with the personal part of this controversy. Enough remains 

 of scientific assault, as amply shewn in the preceding pages. But this concerns the living: 

 and enough remain, again, to defend what is capable of defence, and to surrender what 

 must be surrendered. For all else, I select two names from the rolls of fame in which 

 my late opponent is now inscribed, and I join to Morhof's description of Julius Scaliger 

 — Totus nervosus eat et rerum plenus, vehemens ipsi ingenium, audax, acre, judicium pene- 

 trans, nonnunquam etiam cavillatorium, ut solent viri etiam summi aliqua in re lahi — 

 the question asked by Erasmus concerning Laurentius Valla — Adeo nihil ignoscendum puta- 



mu8 ei qui tot modis profuit ? 



A. DE MORGAN. 



University College, London. 

 August 3, 1857. 



ADDITIONS AND CORRECTIONS. 



$ II. I ought not to have used words implying 

 that Boethius gave Aristotle only in summary, as he 

 did Euclid. 



} IV. Note. I may add that it must not be in- 

 ferred that the Ramist logic long prevailed at Cam- 

 bridge to the exclusion of all other. It is likely that 

 its complete predominance did not long outlive the 

 personal career of Downam in the University. Of his 

 work I cannot even trace a Cambridge edition. Of 

 all the books used by Newton when very young, no 

 one, as it happens, is recorded except Sanderson's 

 Logic : which he read so attentively (Brewster, i. 21), 

 that, when it was lectured on in College, he was found 

 to know it better than his tutor. Such are the scraps 



from which, for lack of historians, we collect what we 

 can about the old studies of the University : though 

 a contemporary comedy will give us more than a 

 dozen subsequent biographies. Thomas Randolph, 

 Ben Jonson's son in the Muses, and Fellow of Trinity 

 College, who died in 1634, not aged thirty, must have 

 written his Aristippus, the scene of which is laid in 

 Cambridge, about or before 1630. The writers on 

 logic then current in the University are told off as 

 follows : — 



Hang Brerewood and Carter in Crackenthorp's garter, 



Let Keckerman too bemoan us: 

 lie be no more beaten for greasie Jack Seaton, 



Or conning of Sandersonog. 



29—2 



