i7f9) 
Qualium Cubus (feu Rhombus folidmj A DE/fit u 
Si vero nonponatur d,^i,fed cujufcunque magnitudims'; erit faltem 
A A 2 A5 a* 
— "\ — \~ — &c, iab 2 , :=rpL 
<1 id 2 jd* 4cU 
Yd (pofico — •= erit e 4- J ^ + |ij -f- -|e* &c. in b 3 rr pLQualium 
l ' . .V, d GCO* 5 " — I ■ <>£..tiO ' 1 » 
d* = ADE /QuadratovelRhombo. 
Ungulaque (ut prius) d pi — A b\ Qualiam d ? tzz A D E <f Cubo, vcl 
(fi anguius A -fit obiiquus) Rhombo folido. 
Cumque A(pofito d= 1) vel e (quicunqueponatur valoripftus*/) fie 
minor quami, (propter A < d :) illius poteltates pofteriores ica continue 
d'ecrefcunt, ut tandem negligi poffint \ planique valor /?/. exhibeatur quan- 
tumlibet vero propinquus. 
Atque haeceft,I11urlriffinie Domine, Methodi, quam innuebam, ex meis 
principiis deduftio, & demonftratio brevis. Vak&xov.d.s. Aug. 1 663. 
Some Illuflration 
Of the Logarithmotechnia of M. Mercator, rvho communicated it U 
the Puflifher, as follows. 
Si quorum in manus incidit Logarithmotechnia mea, non inviti, opinor, 
adfpicient paucula lm exempla, miram iftius methodi facilicacem cum fum- 
ma prsecifione conjunftam oftendentia. 
Expo- 
Unitatis ordo 
Binarii ordo 
nentes 
1 
1 
i 
2 
2 
2 
1 
4 
a, - :.. v . , 
3 I 
1 
0,333333 
8 
^666(566 
4 \ 
1 
0,25 
r6 
4 
5 
1 
©, 2 
32 
<v 4 
6 1 
1 
0,166666 
64 
7 
1 
o, 142857 
12« 
183285714 
8 
1 
0, 125 
2*6 
3* : 
9 
« 
r 
o, nun 
512 
5*, £88888 
10 
1 
o, I 
1024 1 
101,4 
Duo funt ordines ta- 
bellae, prior unitatis, 
alter binarii 'propago , 
quorum uterque deno- 
rum 1 numerorum pri- 
m.orum Log - os pro- 
ducit, prater compofi- 
torum Log - os, qui & 
ipfi reqijiruntur* 
Pppp 2 
