(748) 
Cenfure, which, en pdjfdnt, he thought fit, being defired, to give 
of that Book, and maketh the Omiflion thereof the chief ground 
of his Complaint in his faid Letters, it feems unavoidable to 
comply with him in that demand 5 and to publifli, what (out of 
refped to the fame) was fuppreft ever fince that Vindication was 
printed, with which it then came joyned, as follows 5 
• — : — -Sedrevera (ut quod res eft dkam) Laurens eorum,quae 
fcribit, negiigentior eft, quam Mathematicurn deceat. Cujus quidem fpeci- 
mina, ne hac vice longius petitum abeamus, in hoc Montfertii problcma- 
te, uc a D. Du Laurens expofito, fatis fuppetunc. 
Cur pro extremis Ellipfeos diametris Choc eft, maxima & minima, perpe- 
ram lubftituat, Diametris maximis (quafi in Ellipfi plures efTent maxima dta- 
metri ) caufam defidero, quae ofcitantiam excufet. 
Similiter • Ubi fubftituitur in tranfverfa ejus diametro , pro, in Axe 
tranfytrfo (quafi vel Unica effet Diameter tranfverfa, vel prseter Axes nulla; 
vei, in qua vis indifferenter tranfverfa-dia metro affignari pun&um, intelli- 
gendum effet 5 etiam cum, prater Axes, nulla fit data J DixuTec utique pa- 
ri jure, ubivis intra ElUpfin afpgnato- quippe nullum eft intra Elliplin pun- 
£tum, quod not fit in aliqua tranfverfa-dia metro. 
Infuper- cumimperatum fit, ut, quae Requiruntur, Numeris exhibean- 
tur, confentaneum efTet, ut & quae Dari perhibentur etia m Numeris Data ef- 
fent. Adeoque pro, Datis Elljpfeos Diametris maximis, dixifllt potius, 
Ellipfeos Diametris Extremis ( non maximis,) per numeros defgnatis vel in nu- 
meris datis- Item, pro, turn ailignato pun&o in tranfverfa ejusDiametro 
( ubi, puntio in numeris dato, minus conveniret- ) potius dixiflet, puntiequein' 
ntravis Axe tranfverfo (non tranfverfa diametro) per fttam vel & Centro, vd 
a Venice ^dpfl ant iam, numero defignatam,aJJignato. Item, pro, Segmenta line* 
intra Ellypftn terminate (quod neutrum vel Lineae, vel Segmentorum ejus, 
extremum determinat -J dixiffet potius, Segmenta reti<e, Ellipfi (non Jntra 
Ellypfin) terminatae, in pundo illo fedse ; vel, Segmenta reft a per puntizm 
illnd tranfeuntis^ huic Axi ( feu P untie) & Ellipfi inter je&a- vel, retia Seg- 
ment*, Ellipfi & P untie illo terminal a • vel, quod fit wMvap. y b quod turn 
xedaeextrema, turn pundum Sectionisdefignaret- quorum neutraipfius ver- 
bis determinants, fed con ijecturse permittumur. 
Atquehaec in una Propofitione (eaque non longa) tarn multiplex incuria, 
eo minus veniam meretur, quoniam M^tfertii Problema, quod Du Lau- 
rms tam imperfe&e recitat, muko felicius exaratum erat. quod itaq,- D. Dh 
Laurens vel in melius mutaffet, vel non mutaffet. Undecunque enim hoc 
Problema defumpferit (five ex typis edito Montfertii proplemate, five ex 
Wrennii folutione, typis item edita, five ex meis editis libris) non pocuit non 
videre Problema illud felicius conceptum fed &, quod Jean de Montftrt 
{non fohannisfvatlifius) propofuerat. 
