160 



PISCES, BATRACHIA, AND REPTILIA. 



^-Oxyhemoglobin of Python molurus. 



Tetragonal: Axial ratio a : c =1 : 0.537. 



Forms: The tetragonal bipyramid (111) was the only form seen. 



Angles: Profile views were obtained, giving the angle of the pyramid edges as 



Habit pyramidal; small, very symmetrical, tetragonal 

 pyramids, occurring singly, without producing twins or other 

 aggregates (text figure 30). 



Color, the normal oxyhemoglobin red ; pleochroism 

 noticeable even in the small crystals; a> deeper red than e. 

 e is the axis of greater elasticity, and hence the optical char- 

 acter is negative. 



These small crystals of ^-oxyhemoglobin appeared in the 

 blood received from Washington several days after the slides 

 had been prepared, this being usual with bloods developing 

 several forms of oxyhemoglobin. 



Fio. 30. Python molurut /5-Oxy- 

 hemoglobm. 



TABLE 35. Characters of crystals of reduced hemoglobin, oxyhemoglobin, etc., of the Pisces, 



Batrachia, and Reptilia examined. 



