302 CIRCULATING FLUIDS 



Tlie loss of a considerable quantity of blood by liemorrliage 

 must necessaril}^ influence tlie composition of the blood re- 

 maining in the system. This will be shown (as we have already 

 seen in the Phlogoses) by the diminution of the corpuscles^ and 

 in most cases of the fibrin also. 



From the blood taken from the body we can usually draw a 

 pretty safe inference regarding the composition of the blood 

 remaining in the system : a thick, readily coagulating blood 

 usually indicates an abundance of the circulating fluid, and 

 especially a considerable quantity of corpuscles and fibrin, while 

 a thin non-coagulating blood implies a deficiency of those two 

 constituents. 



The blood does not, however, exhibit the same changes of 

 composition in all the diseases that are classed as hemorrhages. 

 On the contrary, it has been shown by Andral and Gavarret 

 that the composition of the blood in spontaneous cerebral 

 hemorrhage is similar to that which is so characteristic in 

 typhoid fever. 



H(Bmorrhagia cerebralis. 



Andral and Gavarret found that the quantity of fibrin in the 

 majority of cases of apoplexia cerebralis, and of the cerebral 

 congestion known as the forerunner of that disease, w as less than 

 in healthy blood ; the amount of corpuscles was, however, fre- 

 quently absolutely increased, and, excepting in a few cases, was 

 larger, in proportion to the fibrin, than in the healthy fluid. 

 The solid constituents were generally rather increased; circum- 

 stances which all correspond with a state of hypinosis. 



These points are most strikingly seen in certain cases of 

 of spontaneous cerebral hemorrhage, when, for instance, in cor- 

 respondence with the small amount 1*9 of fibrin no less than 

 175*5 of corpuscles were found. 



Andral and Gavarret have made eight analyses of the blood 

 of 7 persons suffering from this aff"ection. Their results are 

 given in the following table : — 



