HajnaJlatks. 5 3 
13. ' And a mean Diameter of a converg- 
ing Artery at the flic pare of the Gut being 
Inch equal to o.co6’7i, its Area will be 
0.000135, and the Number of all thefe Ar- 
teries in 1 1 -f-f Feet length of Guc being 
the Sum of the Areas of all their Ori- 
fices at the flit part will be o.zi88 fqiiareinch. 
14. If we take a fmall converging Artery 
whole Diameter is ^ equal to 0.000308, its 
Area will be 0.00000744 > I have obferved 
from each fide of fuch an Artery, four Branch- 
es to go off at right Angles, each of whofe 
Diameter was half of the converging Artery, 
'uiz- ^ Inch equal to 0.00154 whofe Area is 
0.000002 i 8, which multiplied by 8, the Num- 
ber of thofe Branches, the Sum of their Areas 
is 0.00001744, which exceeds the former by 
0.00001, 
1 5. Thefe reticular converging Arteries, by 
being thus inofculated into each other, both pre- 
vent Obftruiftions in them, and alfo thereby 
the more plentifully fnpply the next Series of 
redangular Branches with Blood j for if the 
Blood had entered the converf^ing Arteries 
only at one end, its Velocity would thereby 
have been more retarded in going the whole 
J-ength than half the Length of thefe converg- 
E 3 
