( 59 ^ ) 
?nathematicum , dedicated to Cardinal Tolignac , and 
printed at Trevife and Venice , 1717, which being 
prefented to the Royal Society , and by the Society re- 
commended to me to give an Account of it, I hope no^ 
Body will blame me for making a faithful Report. 
The Author in his Preface, and throughout the 
whole Book, in a moft arrogant manner, has infulted the 
greatefl Philofopher that this or any other Age ever 
bred, triumphing in what he thinks the Miftakes of 
Sir Ifaac Newton and his own Difcoveries. Had he 
modeftly related the Fa&sas they appeared to him, and 
his Reafons for drawing Confequences different from 
thofe of Sir Ifaac Newton , the World might have 
thought him urged on by the Love of Truth in his 
ten Tears Labours , * and his Errors might have been 
excufed according to what he fays in his Preface Si 
forte decifior , baud turf is eft in re Fhyfico-mathe - 
matica error , & magnis fe quifque tuetur exemflis . 
Neither would his Fame have been the lefs (if he had 
been right in his Experiments and Reafonings) for 
treating his Adverfaries in a civil Manner, and really 
doing what he fays at the End of his Preface “ Flacita 
“ quidem authorum laceffo ; at iffos tamen authores 
ct obfequio & veneratione frofequor For ill Man- 
ners can never be excufed by what he calls Thilofo • 
fhica Libert as. Now nothing lefs than owning, that 
a greedy Defire of Fame , and an Obftinacy to main - 
tain what he once laid down as his Of inion , mifled 
him fo far , can excufe him to the learned IVor Id. 
Wehear indeed in a Letter from Sir ThomasDereham 
to Sir Hans Sloane , Prefident of the Royal Society , 
that now Signior Rizzetti alledges, “ That he was 
* See Preface, p. 3?. 
deceived 
