66 



ANATOMY 



The values for the human serum are related to those for the 

 Albmo in the folio whig way: 



(1) The absolute value of Nd is the same in both forms — when 

 mature. 



(2) The refractive index is higher before suckling than it is 

 immediately after. 



}i 



D 



348 



1.346 



1.344 



1.342 



1.340 



REFRACTIVE INDEX OF BLOOD SERUM 



/V 



- PERCENTAGE OF SERUM PROTEINS 



Chart 6 Changes in the refractive index and in the relative amount of se- 

 rum i^roteins, based on the data given in table 29, 



P = protein. 

 A = albumin. 



G = globulin. 

 A'' = non-protein. 



(3) After this initial fall the index increases rapidly — but 

 from birth to puberty the values for man are higher than for 

 the Albino. 



The changes in the refractive index of the blood serum with 

 temperature have been examined by Hammett and Teller ('22). 

 The observations showed with rising temperature a first type 

 (in winter rats) in which the changes in the refractive index 



