PLATE 48 



283 



284 



287 



283, 284. 



'_'s.~>. L'SI, 

 'JsT. 



2SS. 



288 



Oxyhemoglobin of the Ground-sqmrrel (Tamias sti-fatus), showing irregular pinups nf crystals 



growing in protein rins; 



Siune showing long rrysl:ils grottiiiir in ru'lialiir,' gn>n|is I'miii protein riii'r. 

 Oxyhemoglobin of the Prairie Dog ( ''//'"""//' Inilnririiiniini, showing ilivergcnt tufts of hair- 



like crystals, growing from cover edge. 

 Same, showing divergent groups of larger ucicular crystals, seen in polarized light. 



