Hcemafiatia. 65 
but doubtlefs with vaftly greater Rapidity thro* 
the Lungs, than thro’ other Parcs of the Body. 
6 , If according to the Eftimate under Ex- 
periment VIII, 4.54 Pounds of Blood pafs 
thro’ the Heart in a Minute, then the fame 
Quantity muft alfo pafs in the fame time, thro’ 
the Lungs, fince the left Auricle and Ventricle 
are fupplied from thence with Blood. 
7. The Sum of the Surface of all the Ve- 
ficles of the Lungs of a Calf, were eftimaced 
Vol, I. p. 142. to be equal to 40000 fquare 
Inches, whence in proportion to their Weight, 
thofe of this Dog muft be equal to 12121 
fquare Inches : And as there were found in 
Exper, VIII. 4.54 Pounds or 1 13. <384 cubic 
Inches of Blood to pafs thro’ the left Ventricle 
of that Dog, thefe cubic Inches divided by 
T^'o Inch, or 0.000^72, the Dia- 
meter of the fine capillary Vefiels, the Produd: 
is i6’pi72 fquare Inches, which that Qtian- 
tiry of Blood would fpread into. Thefe di- 
vided by 12121, the Number of fquare Inch- 
es in the Veficles of the Lungs give 13.5?^, 
fo that they are j-^th part of the expanfe 
of the Blood : And allowing one half of thefe 
for the Space between the Cavities of the 
Blood- vefl'ds, then the Sum of all the Cavities 
F of 
