UNIVERSITY OF CALIFORNIA PUBLICATIONS 



IN 



ZOOLOGY 



Vol. 19, No. 3, pp. 85-134, plate 1,19 figures in text April 7, 1919 



STUDIES ON GIARDIA MICROTI 



BY 



WILLIAM C. BOECK 



CONTENTS 



PAGE 



The cycle of encystment in Giardia microti 86 



Introduction 86 



Materials and Methods 87 



Discussion 104 



Summary 107 



The development of Giardia microti within the cyst 108 



Materials and data 108 



Binary fission within the cyst 110 



Multiple fission within the cyst 113 



Summary 118 



The parabasal bodies of Giardia microti 102 



Function of the parabasal bodies 120 



Biochemical and staining qualities of the parabasal bodies 122 



Origin of the parabasal bodies 124 



Summary 125 



The therapeutic value of bismuth subnitrate and bismuth salicylate in the 



treatment of giardiasis (lambliasis) of rats 126 



Introduction 126 



Procedure 126 



Discussion 130 



Summary 132 



Literature cited 133 



Explanation of plate 134 



