[ II72] 
doth ia a manner, from ftepto ftep,carp andcavillat 
all and every thing. Boatting, that himfelf can per- 
form all by a very fmall Inftrument , with TelefcopicJ^ 
Sights, Thirty, Forty, yea Thr«|lcore times more ex- 
actly; (^while yet he hath not, that this Author knows 
of, ever publimed to the world any one confiderable 
Obfervation performed by himfelf.) Concerning which 
this Author appeals to the judgement and experience 
of this his friend ("who had often feen the pradtice of 
it) whether he could not clearly diftinguifli/i/^ 
even without the ufe of Diagonal lines (as Mr. Hook^ 
pretends, and cavils at it.) And whether he can ima- 
gine that Mr. Hool^ can with an Inftrument of one 
Span ("foinftruited as he defcribes) perform things Fifty, 
or Sixty times more exactly, than he with* his oi 6 or 
8 foot Radius. And, what difference he thinks there 
may be between the parts diftinguiftied by Diagonal 
ilope-lines ('cutting the Arches of Concentrick circles) 
and thole of the fame Arches by ftreight lines from 
the Center, (which this Author alfo there ufethj leav- 
ing it indifferent to judge, either by the one or the o- 
ther, as the obferver pleafeth.) But wonders that Mr. 
Hooh^ who hath never yet performed, or fo much as at- 
tempted, any thing in this kind; fhould take upon 
him thus to cenfure others. Thinking that it more be- 
comes learned Men, not to boaft of what theyr^w, or 
vpill, or mean to do, but rather to let the world know 
what they have done, /aid when Mr. //(?0>^ hath per- 
formed things fo much more accurate, it will then be 
time to tell the World what they are. 
The 11^^. is a letter of his, of like complaint, to 
Mr. Oldenburgh Adding moreover, that Mr. Hoo^^ 
fliould rather have written his Animadverfions in La- 
tine^ or gotten fome body to put them into Lattne for 
him , ( as for thofe formerly concerning M. Aw^ot , ) 
and not put thofe (that are not perfed matters of the 
Englijh' 
