CONTENTS. IX 



CHAPTER V. 

 YOHO GLACIER. 



PAGE 



1. General Characteristics . . . . . . . . . . .71 



2. Nourishment . . . . . . . . . . . . .72 



3. Distributary . . . . . . . . . . . 73 



4. Moraines ............ 74 



5. Crevasses . . . . . . . . . . . . -75 



6. Ice Structure ............ 76 



7. Drainage . . . . . k . . . . . . - 77 



8. Frontal Changes ............ 78 



9. Former Activity . . . . . . . . . . . .78 



a. Moraines ............ 78 



6. Plucking action ......... 79 



c. Yoho Valley . . . . . . . . . . . .80 



CHAPTER VI. 

 ILLECILLEWAET GLACIER. 



1. General Characteristics . . . . . . . . . . .81 



2. Nourishment . . . . . . . . . . . . .82 



3. Moraines . ........... 83 



a. Surface ddbris . . . . . . . . . . . .83 



b. Left lateral moraine ........... 83 



c. Terminal moraines .......... 84 



d. Right lateral moraine .......... 85 



0. Boulder pavement . ....... 85 



4. Crevasses ... ......... 86 



5. Ice Structure . ............ 86 



6. Drainage ............. 87 



a. Surface and marginal drainage ......... 87 



b. Terminal drainage ........... 88 



c. Temperatures ............ 89 



7. Forward Movement ........... 89 



8. Frontal Changes ............ 31 



a. Recession data .......... .91 



b. Ice waves ............ 93 



9. Former Activity 



a. Rock scorings 



b. Bear-den moraines 



95 

 95 

 96 



