PLATE 10 



59 60 



55. Oxyhemoglobin of the Trumpeter Swan (l>lur hurritiittur), showing large simple crystal. 



56. Same, showing arborescent aggregates. 



57, 58. Oxyhemoglobin of the Whistling Swan (Olur <'iiliiiiilii/iiiiix~i. showing largr iwinnrd crystals in flat 



ami edge aspects. 

 59, GO. Same, showing large composite crystals as seen on basal aspect. 



