( Mf ) 
Sedion through five given Points, fubjoining at the 
fame time, that if more Poles are employed, and 
Angies or Right Lines, the Locus was ftill a Conick 
Sedion ^ which I thought w^s a remarkable 
Property of the Conick Sedions not obferved be- 
fore. 
Thefe Things I intended to put in order, and 
publilh in the Supplement to my Book, a Part of 
which has been printed fmce the Year 1721. I 
have in my view alfo to give feveral other Things 
in that Supplement ; two of which, I fhall only juft 
mention at prefenr, becaufe I believe they are fo- 
reign to the prefent Affair. I fubjoin a Problem 
determining the Figure of a Fluid, whofe Parts are 
fuppofed to be attraded to two or more Centers ; 
and a Solution of a general Problem about the Col- 
Hfion of Bodies. 
The Author of the Papers given in to the Royal 
Society, will not refufe that l fhewed him the 
Theorems, I now fend you, in 1717. He owned it 
laft Summer at leaft : I am to publilh thefe very 
foon. Whether he has carried the Subjed farther, 
I leave to the Judgment of the Gentlemen to whom 
they were referred. As to the Demonftrations, it 
would take fome time to put them in a proper Form 
to be publifhed. You who have fo nice a Tafte of 
Demonftrations, willeafily allow, that it ought not 
to be done in a hurry. I could fend thofe that are 
Algebraick eafily ; but do not care to fend thofe that 
are Geometrical, till 1 have leifure. I could not 
have been called to this in a worfe Seafon of the 
Year than now, when I begin my Gaffes, and have 
few 
