much of the Language wherein I have written, as to un-^ 
derftand all what was faid by me, or, that he had not read 
my Dedication to the l^yal Society , which if he had done, 
he would have found, how careful I was, that that Illujlrious 
Society QiQwXd not be prejudiced by my £'rrer/, that could be 
fo Httle advantaged by my ABioiis, And indeed, for any man 
to look upon the matters publiflied by their Order or Licence^ 
as if they were Their S^nk, and had Their Approbation, as cer- 
tain and true^ 'tis extremely wide of their intention5,feeing they, 
in giving way to, or encouraging fuch publications, aim chiefly 
at this^thsiZ ingenious CQf4cepti&Hs, and important philofophical mat* 
^£r<?/F<3S may be communicated to the learned and enquiring 
Worldj thereby to excite the minds of men to the examination 
and improvement thereof. But, to return j As ta his OhjeHkm - 
againft the Matter J. do find that they are no more againft mine, 
than any other way of Grindina Claps i nor is it more than I 
have taken notice of my felf in this Paflage of the fame P^^r^- 
graph^oi which fort are alfo thofe difficulties he raifes about 
Lon^GlajJes^ which are commonly known to fuch, asarecon- 
verfant in making them. It would be convenient alfo (thefe are my 
words) and mt very chargeable, to have four or five [ever alTQols i 
One, Sec. jind, if curiofity Jhall ever proceed fo farr, one for all ' 
lengths ^between looo. and i oooo, foot long forindeed.the Principle 
is fiich^ that ftippofng the Mandrils \y'eU made^ and of a good lefigth^ 
and fkppojing great care be ufed in ivorking andpolifoing them^ 1 fee 
no reafon, hut that a Glaf! of looo, naff:^ iGOoo. foBt long may be made^ , 
aftwellafone of lO. For,the reafon is tke fame, fuppofng the Mmdrih s 
and Tools be made fufficiently Jiroug, fo that they cannot bend • mid 
(uppoftng alfoythat theClafs out of which they are wrought^he capable of 
fo ^reat a regularity in its parts, as teits JR^fraUion, But nextj I 
muft fay that his ObjeBi&ns to me, feem not fo confiderable, as - 
perhaps he imagines them. For, as to the poffibility of getting- * 
plates of Glafs thick and broad enough without veins, I think 
that not now fo difficult here in England^ where I believe is made 
as goodj if not much better Glafs for Optical Experiments, than 
ever I faw come from Venice ^ Next, though it were betterjthat 
the thickefl part of a long ObjeU-Glafs were exadly in the 
ziilddle, yet I can ^Qm^Moxi^imx Au^^ota^ that it may be a very 
good -J 
