Contents — Continued 



Page 



Umbilical hernia 237 



Renal calculi 238 



Congenital deformity 238 



Frostbite 238 



Entrapment in heavy ice 238 



Physical exhaustion 238 



Damage by rockslides 239 



Overview 239 



Population 240 



Identity 240 



History 241 



Enumeration 242 



Mark-Recapture 243 



Catch statistics 243 



Aerial census 245 



Composition 248 



Population in 1960 250 



Population in 1972 252 



Production 256 



Survival and Recruitment 259 



Outlook . .261 



Acknowledgments 265 



References 266 



V 



