( 597 ) 
“ Experiment would fucceed, if the Paper was turned 
‘ fo as to bring the red Half in the Place of the blue 
‘ one; and that if it fucceeded then, yet he would 
‘ n ° ta «iuiefce, but he Ihould have fomething (till to 
’ objeft againft it And further, that he wanted to 
know what could be faid to feveral other Objeftions 
(I think there were twelve in the Paper Ihewed met 
againft many more of Sir Ifaac Newton's Optical 
Experiments, the greateft Part of which he faid, 
U c- e fucc eed differently from what 
Sir Ifaac had related j and would not allow the 
‘ Confequences to be juft, which were drawn from 
<• the other Experiments which he had found to agree 
« with his Trials’’. Upon this I acquainted Signior 
G izlanzom in a Letter, which I deftred him to com- 
“ mumcate to Signior Rizzetti ; “that as" Signior 
‘ toxzetti had put the Iffue of the Difpute upon the 
Succefsofan Experiment, which after repeated Trials 
had fucceeded contrary to his Opinion, he ought to 
acknowledge his Miftake j and then I ihould willing v 
repeat all the other Experiments which he had called 
in Queltion, and endeavour to remove his other Diffi- 
‘ culties. That if it was Truth and not Victory which 
hecontended for, I did not doubt but he would com. 
“ ply with me, in what I infifted upon ; and then 1 Ihould 
“ be ready to make any Experiment, or clear up anvDif- 
“ ficulty relating to the Doftrineof Colours, inthebeft 
manne t I could”. ButI never heard any more from 
Signior Rizzetti ; but was told by others that he was 
very angry at Signior Gizlanzoni, and faid he was 
got into Sir Ifaac Newton's Party. 
N °W at Eft Signior Rizzetti haspubliflied a Book, 
entituled De Luminis Affeftmibus Specimen Rhyfico- 
mathematicum , 
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