( 701 ) 
Exemplum. Ad demonftrationem Solutionis noflrie fuf- 
fecerit exemplum (impliciffimum. Sic itaque »— i ; quo 
in Cafu eft A B'D femicirculus diametro AG defcripcus, 
acque E B F item (emicirculus defcriptus diametro 
A E. Eft aucem in hoc Cafu .. Unde 
in ^ 3. fit adeoque z=a. — quas 
a^quatio eft ad Circulum diametro Gz=a defcriptum, 
ut fieri debuic. Item pro-» (cripto sequatio — z.x- 
( § II. ) migrac in hanc 2.^ — zx — rx,. 
Unde extecminandOjr ope s^uationia f 2, fit 
— — = —X ; adeoque regredicndo ad Fluentes 
K K 
^ a, qucE sequatio eft ad Circulum diametro 
AE^a deftriptum, ut etiam fieri debuic. 
III. ExtraSl of a Letter of Dr. Ghi*. Hunter, M.D. . 
to Dr. J. Woodward, (Z5; 5. 5. from Durham, gt- 
Vmg an Account of a Roman InfcriptioUi lately 
dug up in the North of England 3 with fome Hi- 
Jlorical and Chronological ^marks thereon». 
T he Infcription which comes herewith, {Ftg. II.) 
was dug up, two Years agOj in the Roman 
C AST RU M, LancheHer : The Infcription ^ 
is very legible, and gives me reafon to hope, a Search . 
after the firft Fortifying this Place will not be unnecef- 
fary ; eipecially, being able to fix the Time of Gordian s 
R-epair-"' 
