PLATE 2 



Oxyliemoglobin from a fish (carp). Oxyhemoglobin from an amphibian 



(necturus). 



I 



Oxyhemoglobin from a reptile Oxyhemoglobin from a bird (goose), 

 (python). 



Oxyhemoglobin from a mammal Oxyhemoglobin from a mammal 

 (dg)- (guinea-pig). 



Plate showing the different Oxyhemoglobin crystals from different 

 classes of vertebrates. (From photographs kindly given the author by 

 Prof. Edward T. Eeic-hert.) 



