PLATE 57 



337 



338 



339 



341 



:;:i7. .S-Oxyhemoglolmi of the 1'oiviipine (Kn1lii:<ni ilurxntitx), showing large crystals in liasal aspect. 

 i'liJS. Same, showing liasal and edge views. 

 W.I, :!40. ( (xyhemoglobin of the Guinea-pig 'ttriit i-ullcn}, si lowing small single crystals and twins of types 



</ and i'. 



M41. Same, medium-size crystals, some twinned, showing types n, l>. and r. 

 ;!4'2. Same, showing large crystals with twins of types u and /<. 



