I'LATE 3 



KXPI,A\ATI()\ OF FKilKES 



13 Culture Z, Line I, 9Lst geiu'iatioii, Xoveniher o, 1014. Illustiatiiifi, the 

 method of macronuclear dissolution l)y streaming out of ohi-omatin. Alicio- 

 nucleus shows the characteristic hand formation of early endomixis. 



14 Culture Z, Line I, 93d generation, Xov^ember 6, 1914. Macronuclear dis- 

 solution l)y elimination of chromatin bodies. Single micronucleus close to 

 macronucleus. Five food vacuoles shown in tlie (■(>!!. 



