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# Title: [Johannis Wallis S. T. D. Geometriae Professoris Saviliani, in Celeberrima Academia Oxoniensi, De Algebra Tractatus; Historicus & Practicus. Anno 1685 Anglice editus; Nunc Auctus Latine. Cum variis Appendicibus; Partim prius editis Anglice, Partim nunc primum editis] Johannis Wallis S. T. D. Geometriæ Professoris Saviliani, in Celeberrima Academia Oxoniensi, De Algebra Tractatus; Historicus & Practicus. Anno 1685 Anglice editus; Nunc Auctus Latine. Cum variis Appendicibus; Partim prius editis Anglice, Partim nunc primum editis (shelfmarks Leibn. Marg. 100:1/2, Stück 2; Leibn. Marg. 100:1/2)
# Folio 765, page id 851708439:0789
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EPTS FOF A VII
D. Joh. W allis ad D. Kenetmum Dieby.
Rieht Lod D
Pon sighe oF jour extreamly ciril leuter of che T. ot AuBuIF, (Fp. 6.) wtich
Thad che honour cro days lince co receire trom vou, it is noc caly c0 lay
hon much JFound my selt surprized; Hnowins hon licile P had deserred trom (0
noble a hand, and hou small à Phare Was due ro me of whar ron are pleased (0
liberalles co impute. P as altramed, L contels, co chinke hou licle P durst own.
ot that honour sou put uxon me; and thould hare blushed decpls, had not che
Suddennels oF chat surpriral (0 muchi appaled me. And wrhen P’choughe oF any
reply, L tound chat son had cherein prerented me; in layins (o much oF What I
ousht to hare Caid, chac, untels I vousd transeribe and recurn vou back rour
onn ords again (tor becrer P could noc) Phad nochins leti 10 Cay. And vet
chis Idurt noc; tor tear of pollurins chat languase, Wtuch L cannor pretume 10
imitate, by (0 rude a Den. II vou ill buc tarour me lo Far, a5 1o perule chc
copy ot rour omn setter, and interpret che oreatest part chereot as Paid by me, 25
an actnoledement ot chose cirilicies rhich I could noc deserre, and a disclaim
ins otchole delerrs which L must noc own; vou will chere tind a Lecrer an liver
and in lansuase more betitting jour noble lelt, chan von can pollibly uxon ans
otter accouni expeet trom me. L’or though I do noc precend 1o any still ac Ten-
nis; vec am P very sensible, chac L must noc sulter, buc ac my grearest hazard, (0
much obsequious lansuase, and exprections ot oblisins soodnels, 1o relt at me
wichout recurnins ehiem co che lame hand trom nhence chey came: Aud choush
am not able eo recurn chem wich chac srace aud dexteriis wrherewich chey ivere
Tenc; Ter Phumbly beleech rou eo beliere, chat ic is noc tor wane ot any realir
ot attection or readine(s co serre vou, that P tall Pore ot irhat in duiy l’Oe, 10
one whom PF0 much honour. Imult confels, L could noc wichour lome pleasine
Content (neque enim mihi cornea fibra est) sec my SelF Po hishly honoured, hou-
erer undeserrine, by (0 tair a character, though much unlile me, dramn by 1o
brare a hand; (as Ladies who are lometimes pleased in secins cheir pietures Aacter
them;) and thould be extream proud ot it (ivere Inoc contcious hou lucle there
is in me t0 an Lver it,) as comins trom (o gallane a person; whole authorits is
able to sire credie co his opinion cherein.
Thole ocher tvo Genclemen nhom vou are plealed to joyn me wich in jour
sood opinion, D. Wilkins and D. Wara; TMall uxon cheir recurns hicher, 2c
quaine hor much chey are oblised to you For chat hOnOUT vOu DuE uxon chem
Pean onty ac prelent; trom those great respects Which L knou they hare For vou,
alture rou chat they are very much vour serrants. And ire must all actenou-
ledse our setres dceply indebred to M. Wbite, Wrho is pleased noc only to judec
so tarourably oF us, buc to represent us to rou in luch à Character as hach gained
us Lo adrancasious à place in rour opinion.
The problem to which rou reter, ot MonL. Fermat, as a Challence 10 all he
Machematieians OF Furope; was chac, E suppole, ot which I had trom che L.
Brouncher a copy, in chese mords,
Invenire cubum qui additus omnibus suis partibus aliquotis conficiat quacratum.
FNempli eratia, Numerus 343 est cubus, à latere 7; omnes ipsius paries aliquota
sunt 2, 7 49, quae adjuncta ipsi 343 conficiunt numerum 400, qui est quadratus
a latere 20. Quaritur alius cubus numerus ejus dem naturae.
duaeritur etiam numerus quadratus qui additus omnibus suis parcibus aliquotis
conficiat numerum Ciubum.
ftas soluriones expectamus; quas si Anglia, aut Callix Belgica e Celrica non
dederint, dabit Callia Narbonenlis, easque in pienus amisitiae nascentis D. Diotius
offeret ea dicabit.
Fo vtich L eave no ocher Tolution at che presene, Dur Lhat ihe number Z sa-
tissied both his problems. Subjoinins by as ot return, anocher ot che lite na-
cures (Which tor oustic L Huon may prove as hacd ad eicher ot tiis rvo;) vis.
Ddddd 3
Invenire