Hcemajlatics. . loi 
which was efteemed the Qiianticy of Blood 
in the Lungs. 
28. Calling therefore the whole Qiiantity 
of Blood Xy or the Proportion of the whole 
Quantity of Blood in the Lungs, Ratio x: 1 
X: I :: y. ^6 (Degrees of fenfible Heat in the 
Lungs acquired in two Minutes) to the Degrees 
of fenfible Heat of all the Mafs of Blood ac- 
quired in the fame time, that is This 
Qiiantity muft be added to the Heat of the 
whole Blood for every two Minutes, if the 
Breathing be flopped fo long. 
25). Now the whole Quantity of Blood in 
a Man being eflimated twenty five Pounds: 
The Quantity of Air forty cubic Inches 
= 1.24 Pounds, that is, fuppofing its fpecific 
Gravity to be equal to that of the Blood ; but 
the Bulk of the Blood has been found above 
to bear a Proportion to the Bulk of Air in the 
Lungs as i to 3.48, therefore if we (ay as 
3.48 to I. fo the Weight 1.24 Pounds (of 
the Bulk of Blood equal to that of Air in 
the Lungs) is to the Weight of the real Quan- 
tity of the Blood in the Lungs = -^^-=0.55(3 
of a Pound ; confequently multiplying the Heat 
acquired in two Minutes <^,^6 Degrees into 
the Qiiantity of Blood, it is in 0.5 5 6” of a . 
H 3 Pound 
