PLATE 22 



131 



127. Oxyhemoglnbin of the Rat-kangaroo (.'/// (/'" <<' rufescens), law rnstals griming from cover 

 edge and some showing interpenetrant twin on prism in the flattened crystals. 



12s. Sanir, showing gypsum t\|.c of t \\iii. These large crystals are flattened lietween cover and slide. 

 129, 180. Oxyhemoglobin of the Kangaroo (.Mm-i-ii/ms i/ii/niiteii.-i'i, showiiig lath-shaped crystals growing 

 singly and aggregated into sheaf-like bundles. 



131. Same, showing stellate group of crystals along cover edije. 



132. Same, showing larger lath-shaped crystals of parallel growth. 



