( ) 
It lies upon him alfo to tell the World what was the Me- 
thod by which the feveral Series of Regreflion for the Circle 
and Hyperbola, lent to him by Mr. Wen ton June 13. 1676, 
and claimed as his own by his Letter of Auguft 27. following, 
were found by him before he received them from Mr. New ton. 
And whereas Mr. Newton fent him, at his own Requefl, a 
Method of Regreflion, which upon the firfl reading he 
did not know to be his own, nor .underflood it ; but fo foon 
as he underflood it he claimed as his own, by pretending 
that he had found it long before, and had forgot it, as he 
perceived by his old Papers : * it lies upon him, in point of 
Candor and Juflice, either to prove that he was the firfl 
Inventor of this Method, or to renounce his Claim to it for 
preventing future Difputes. 
Mr. .Leibnitz, in hjs Letter to Mr. Oldenburgh- dated Feb. 3. 
.1671 claimed a Right to a certain Property of a Series of 
Numbers Natural, Triangular, Pyramidal, Triangulo* 
Triangular, &c. and to make it his own, reprefented that 
he wondred that Monfieur Pafcal, in his Book entituled 
Triangulum Arithmeticum , fhould omit it. That Book was pu- 
blilhed in the Year 1 and contains this Property of the 
Series ; and Mr. Leibnitz has not yet done him the Juflice to 
acknowledge that he did not omit it. It lies upon him there- 
fore in Candor and Juflice, to renounce his Claim to this 
Property, and acknowledge Mr. Pafchal the firfl Inventor. 
He is alfb to renounce all Right to the Differential Method 
of Mouton as fecond Inventor: for fecond Inventors have 
no Right. The foie Right is in the firfl Inventor until ano- 
ther finds out .the fame thing apart. In which cafe to take 
awaythe Right of the firfl Inventor, and divide it between 
him and that other, would be an A< 5 t of Injuflice. 
In his Letter to Dr. Sloane dated Decern • 29. 1 71 r. he has 
told us that his Friends know; how he came by the Differen- 
tial Method. It lies upon him, in point of Candor, openly 
and plainly, and without further Hefitation, to fatisfy the 
World how he came by it. Mm2. In 
