PLATE III 



.g'&^i^. 



^^^K|K 



- V Yc J ^ ** jk V : N i^JC ,'Sv 



.* *! ~;7~ *^i .^> .^*T4iSb/ 





v 



FIG. 7 



Carcinoma of Mammary gland + 90 

 Transmitted light: Low power 



FIG. 8 



Tongue of Blow-fly + 50 

 Transmitted light: Low power 



