202 Mr. T. S. Davies on Geometry and Geometers. 



slender performances. I would by no means have so long delayed to 

 write in answer to your civil letter, but that I every post expected to 

 have heard of the receipt of Nine copies I sent more than half a year 

 ago to Stationers' Hall, that I might inform you of the books (I mean 

 the Loci Plani) being to be speedily published, but notwithstanding 

 I have dunned the person to whose care I committed the Sending 

 of these copies from Edinburgh, ever since he told me of their being 

 ready to be shipt for London, I have not yet account of their being 

 got there. I beg you will forgive my incivility in not writing sooner, 

 and that you will be so good as to write me how to direct a letter to 

 the keeper of Stationers' Hall whose name I know not, or, if it were 

 not too much trouble that you would, as the speedier way, acquaint 

 me if he has received these 9 copies, and if he has not already sent 

 a receipt of them to be given me, that you would get one and trans- 

 mit it to me, upon which I should immediately order the book to be 

 published in the Lon. Gazette and some other of the publick papers. 



" The price of it to the publick, bound, I am advised to make 1 1 sh: 

 the finest paper, and 9 shill : the other, which is not much coarser ; 

 and to Booksellers who take 100 or more copies 5 sh: in sheets, one 

 third of the best and f ds of the other paper. It consists of 31 sheets 

 and \ sheet over in 4 to, and there are about 700 copies printed by 

 Mr. Foulis here. 



" As for the Conick Sections, Mr. Alexander Kincaid Bookseller 

 in Edinburgh bought the entire right from me more than a year ago, 

 nay it is a year since he reprinted them at Edinburgh ; but they are 

 not yet published, and I heard last week that all the Copper plates 

 were not cast off as yet, for what reason I know not ; so it is to him 

 you are to apply if you incline to have any of them. I have corrected 

 a good many things and changed some Demonstrations for the better. 

 Some few things have been added by my friend Mr. Matth. Stewart 

 and my self, an account of which you will see at the end of the 

 Preface. I wish you a happy new year, and am 

 " Sir, Your most humble 



" and much obliged Servant, 



"Rob: Simson." 



"Glasgow, 21 Jan. 1751. 



" Sir, — The favour of Your letter I had in due time, and return 

 you hearty thanks for the trouble you have taken in Searching at 

 Stationers' Hall for the 9 copies of the Loci Plani. Tho' a good time 

 ago I was informed from Edinburgh that these copies had, long be- 

 fore that, been Sent up to London, I find now by a letter from Mr. 

 Kincaid that they are not yet Sent, which is a neglect I cannot ex- 

 plain the reason of. As soon as I knew this, which was only last 

 week, I wrote to send them hither immediately. 



" I have this day directed Mr. Foulis to put up one hundred copies, 

 Ad of the best and f ds of the other paper, but shall wait a few days 

 that I may get the 9 for Stationers' Hall to send along with them. 

 Since you are so good to offer to deliver them and see them regis- 

 tered. There are some few Errata which I caused print after the 



