THE BLOOD. 



different species of animals. In most animals the blood corpuscles have 

 a relatively large proportion of potash salts and phosphates, whereas 

 the preponderating salt in the serum is sodium chloride. In the bullock, 

 however, this salt also occurs in large amount in the corpuscles. 



Defibrincded Blood of Pig, Horse, and Bullock (Bunge). 



In the pig's blood analysed, there were, in 1000 parts, 436 '8 corpuscles, and 

 563-2 serum. 



In the horse's blood analysed, there were, in 1000 parts, 531*5 corpuscles, 

 and 468 -5 serum. 



In the bullock's blood analysed, there were, in 1000 parts, 318'7 corpuscles, 

 and 681 '3 serum. 



A. Schmidt, in conjunction with his pupils, 1 got the following results 

 from analyses of human blood obtained by venesection. 



Gases of the blood. Arterial blood of the dog contains from 15 to 

 25 vols. per cent, oxygen (at C. and 760 mm. pressure), 25 to 40 car- 

 bonic anhydride, and about 1 P 8 vols. per cent, nitrogen. Venous blood 

 of the same animal contains from 5 to 15 vols. per cent, oxygen, 38 to 

 52 carbonic anhydride, and also about 1'8 vols. per cent, nitrogen. 2 The 

 proportions of these gases and the manner in which they are combined 

 with constituents of the corpuscles and plasma is discussed elsewhere. 3 



1 Arronet, Diss., Dorpat, 1887 ; Warnach, Diss., Dorpat, 1888. 



2 Schoffer, Sitzungsb. d. Tc. Akad. d. Wissensch., Wien, 1860, Bd. xli. S. 589 ; 

 Sczelkow, ibid., 1862, Bd. xlv. S. 171 ; Pfliiger, Arch. /. d. ges. Physiol., Bonn, 1868, Bd. 

 i. S. 275. 



3 See " Chemistry of Respiration." 



