SrSir

I have sent you yethe sheet you want. The second book I made ready for you in Autumn, having wrote to you in Sommer that it should come out wthwith yethe first & be ready against yethe time you might need it, & guessing by yethe rate of yethe presse in Sommer you might need it about November or December. But not hearing from you & being told (thô not truly) that upon new differences in yethe R. Society you had left your secretaries place: I desired my intimate friend Mr C. Montague to enquire of Mr Paget how things were & send me word. He writes that Dr Wallis has sent up some things about projectiles pretty like those of mine in yethe papers Mr Paget first shewed you, & ytthat 'twasit was ordered I should be consulted whether I intend to print mine. I have inserted them into yethe beginning of yethe second book wthwith divers others of ytthat kind: wchwhich therefore if you desire to see you may command yethe book when you please though otherwise I should chose to let it ly by me till you are ready for it. I think I have yethe solution of your Problem about yethe Suns Parallax, but through other occasions shall scarce have time to think further on these things & besides I want something of observation. For if my notion be right, the Sun draws yethe Moon in yethe Quadratures, so that there needs an equation of about $4$ or $4\frac{1}{2}$ minutes to be subducted from her motion in yethe first Quarter & added in yethe last. I hope you received a letter wthwith two Corollaries I sent you in Autumn. I have eleven sheets already, that is to M. When you have seven more printed off, I desire you would send them. I thank you for putting forward yethe press again, being very sensible of yethe great trouble I give you amidst so much business of your own & yethe R. Societys. In this as well as in divers other things you much ob oblige