( ip72 ) 
In another Edition of my Myotomia Reformata, this Fig. 
the I ft being one of thofe that reorefent the Mu/cular 
StruQure of the Hearty the reft I have added to explain 
thePetrifaOion of the Valves of the Aorta in the following 
iuftance. 
Fig. I. 
A A. The Trunk of the Great Artery opened and dif- 
play'd. 
a a a. The three Semilunary Valves of the A^ta^ which 
hinder the Blood from returning to the Heatt,after it i-^ ex- 
peird thence by its Syjlole or Contraftion 3 thefe Valves 
in this cafe were fomewhat thicker, and notfo plyableas 
naturally, and did not fo adequately apply to each other, 
as is expr^ft Fig. 4. a a a. Whence it hapned fomeiimes» 
that the Blood in the Great Artery f A A A. Fig. 1» ) 
would recoil, and tnternipt the Heart in its Syjiole. But 
this ftubbornnefs of thefc Valves was owing to a r^ony or 
ftony body, markt b. Fig. ift, which ap ear'd much 
plainer when the Valves were dry, a it? repr< fenced in the 
Figure beneath, markt with an a a. the two Valves 
pinn*d out and dry'd, bthe Pctrifaftion or ftony Body at 
their jundion. In this Inftance I obferv'd the Lett Ven- 
tide of the Heart, expreft at GG. DD. ee. ff. Fig. ift^ 
to be a little dilated from its natural fize, but was not by 
two parts in three fo big as thel.eft Ventricle of the Heart 
of one I diflefted in the Prcfence of Or Shane. The 
Symptoms, fome years before the Death of this per- 
fon, who was about 40 years of Age, were extraordinary 
Shortnefs of Breath, efpecially on any fatigue, with an 
intermiffion of one flroke in three of the Pulfe 5 his 
pofture of fitting up was more Eligible than any other, he 
complain d of great faintneG,and now and then pain about 
the Hearty the extreme partii often cold, which towa >ds 
his Death increafed more and more on him ; his Lc^^ md 
Arms being Gangreen'd fome hours before 5 inf niuch 
that the Corps was very oficnfive in opening, tho rwas 
done within 24 hoUTi» after he expired, in the month of 
Noveufbsr* Upon 
