154 CAPILLARY SYSTEMS. 



Q. What predisposes the lungs to hepatization ? 



Jl. The readiness with which they s receive large quan- 

 tities of fluid. 



Q. Is it blood which fills the lungs in disease? 



#. It is not; for on pressing diseased lungs, the fluid 

 will be white, or even purulent. 



Q. Are sacs of pus, or vomicse, frequently found in the 

 lungs? 



t#. They are rare; the pus is effused into the substance 

 of the lungs. 



Q. Does the blood, in inflammation of the lungs, enter 

 vessels naturally conveying white fluids? 



#. It is not certain that there are such vessels in the 

 lungs ; it is most probable that the blood engorges its ac- 

 customed channels, or it is exhaled into the pulmonary 

 texture, overwhelming its functions. 



Q. How does the whole blood of the body pass through 

 the destroyed lungs, in phthisis pulmonalis? 



*ft. The quantity of blood in the body is diminished in 

 proportion as the pulmonary lesion progresses; an evi- 

 dence of this diminution of the quantity of blood is found 

 in the feeble pulse. 



Q. What would be the consequence of transfusing blood 

 into the vessels of phthisical persons? 



Jl. The lungs could not bear any disproportion of blood, 

 induced in that way. 



Q. Would the same objection apply to transfusion in 

 haemorrhage? 



.#. It would not, because in that case there is simply a 

 want of fluid without lesion of the lungs; the increase by 

 transfusion would but supply the materials for the pulmo- 

 nary function. 



