23 



EXCURSION B 9. 



ALGONQUIN BEACH, GLACIAL PHE 

 NOMENA AND LOWVILLE (OR- 

 DOVICIAN) LIMESTONE IN 

 LAKE SIMCOE DIS- 

 TRICT, ONTARIO. 



BY 



W. A. Johnston. 



CONTENTS. 



PAGE. 



Introduction 24 



Annotated guide 28 



Geology of the district about Orillia 31 



General - 31 



Section of the Lowville formation 33 



Bibliography 34 



