UNIVERSITY OF CALIFORNIA PUBLICATIONS 



IN 



ZOOLOGY 



Vol. 19, No. 13, pp. 403-470, plates 29-33, 2 text figures October 23, 1920 



DEMONSTRATION OF THE FUNCTION OF 



TIIK NKU.'O.MOTOU A IM'A U'ATTS IN 



BUPLOTES IJV TIIK MKTIIOI) 



OF MI(M?()I)ISSK(TION 



BY 



CHARLES V. TAYLOR 



CONTENTS 



I'ACiE 



Introduction 



Acknowledgments -.. 



Mi'tliod anil material 



Moist chambers 



Binocular microscope 



(llass needles 



Control 



Staining 



Material 417 



The living organism 418 



Endoplasm *" 



Ectoplasm 42 



Macronueleus 



Micronucleus 



Contractile vacuole 



Anal aperture 



Cirri 



Membranelles 426 



Xeuromotor apparatus '-' 



Movements 428 



Experimental 



Pellicle 431 



Fibrillar system 432 



Transections 435 



Excisions - 439 



Incisions 441 



Discussion 444 



Summary 456 



Literature cited _ 458 



Explanation of plates 462 



