264 



CIRCULATING FLUIDS: 



suffering from pneumonia, two of whom were bled only once, 

 while in three venesection was repeated. 



The mean composition of the blood is expressed in the fol- 

 lowing table : 



Density of defibrinated blood 



Density of serum 



Water 



Solid constituents 



Fibrin 



Fat . . 



Albumen 



Blood -corpuscles 



Extractive matters and salts 



Chloride of sodium 

 Other soluble salts 

 Phosphates 

 Iron 



Zimmerman^ has found the specific gravity of the blood in 

 this disease as high as 1065. 



The following ultimate analyses of dried pneumonic blood 

 have been recently published :^ 



Ash. C. H. 



Blood buffed, 1st Venesection . . 4-365 57-428 8-615 



2d ditto . . 4-081 52-280 — 



1st ditto . . 3-880 51-966 8-543 



2d ditto . . 3-784 51-149 7-832 



Two analyses of the blood in cases of pneumonia bihosa have 

 recently appeared, one by Scherer, the other by Heller. 



The individual whose blood was analysed by Scherer was a 

 robust young man, aged 29 years. 



The clot was tolerably firm and tough, and covered with a 

 greenish yellow bufty coat. The serum exhibited a similar tint, 

 and nitric acid indicated the existence of bibphsein in the urine. 

 The conjunctiva was coloured yellow, and there was considerable 

 gastric disturbance. 



' Hufeland's Journal, 1843. 



2 Ilolfmann, Anualeu der Chemie und Pharmacie, April 1844. According to Macaire 

 and Mavcet (Mem. de la Societe Phys. et d'Hist. Nat. de Genev., vol. 5, p. 223) 

 healthy venous blood contains C 55-7, H 6-4, N 16-2, and 21-7. 



