BLOOD. 259 



break down for a considerable time. It admits of being sliced, 

 and the sections retain their consistency for some time. Its 

 surface is covered with the buffy coat, and is more or less cup- 

 ped. The serum is of a pure yellow colour. The quantity of 

 solid constituents is usually less than in healthy blood. 



4. » 



The maximum of fibiin in my analyses was 9-15, which is the 

 largest quantity that I have ever discovered in inflamed blood. 

 The minimum was 3"4, and the mean of four analyses was 6-0. 

 Andral and Gavarret found the maximum of fibrin to be 10*5 ; 

 the minimum 4; and the mean to fluctuate between 7 and 8. 

 They never met with more than 10"5 of fibrin in the whole 

 course of their analyses. 



The maximum of hsematoglobulin, occurring in my re- 

 searches, was 78, and the minimum 36, which is verj'- far 

 below the amount in healthy blood. Andral and GavaiTet 

 difter from me considerably on this point, (see my remarks on 

 our comparative methods of analysis, page 241.) They make 

 the maximum of the blood- corpuscles 137, and the minimum 

 83-7. We find, however, in the course of 58 analyses, made 

 by them on the blood of 21 persons labouring under pneumonia, 

 that the amount of corpuscles just reached the normal propor- 

 tion in 5 cases, in 6 cases exceeded it, and in the 47 remaining 

 cases fell below it. The average of these cases was 113, which 

 is 14 below the normal quantity in healthy blood, according to 

 Lecanu's analysis. 



The maximum of fat, in my analysis, was 4*3, and the mi- 

 nimum (in a man aged 60 years) was "7. 



The maximum of soHd residue was 202; the minimum was 

 160. In 51 out of the 58 analyses, made by Andi'al and 

 Gavarret, the solid constituents exceeded the ordinary normal 

 proportion. 



In all these cases the quantity of the blood-corpuscles was 

 very high : the fibrin, in two cases, reached 9'1 j and in one case 

 90 : in the others it was low, or amounted to only the mean of 

 the fibrin in pneumonia. 



The two highest amounts of solid residue found by Andi'al 

 and Gavan-et was 230, and 227 ; in these cases the maxima of 

 corpuscles also occmTcd. The smallest amount of solid residue 

 was 166, which coiTcsponded with the minimum of blood-cor- 

 puscles. The mean quantity of solid residue, as deduced from 



