PLATE 63 



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c 



374 



376 



377 



378 



373. Oxyhemoglobin of ( 'alit'ornia Sea-lion (Oturin gilli-s/iii), showing small, first-formed crystals, mostly 



simple an<l untwinned. 



!74. Same, showing larger single crystal. Ilemimorpliie character well sluivvn in tins crystal. 

 "">. Same, showinft Sea-lion twin in edge view, consisting in tliis case of two iniliviilnals. 

 7ti. Same, showing parallel growth and an edge view of Sea-lion twin in parallel growth. 

 77. Same, showing flat view of crystals in parallel growth. Cross-barring is due to twinning of a number 



of individuals in parallel position. 



!7s. Same, showing parallel growth in twins seen on edge, producing comb-like appearance and cross- 

 barring when seen on the flat. 



