via CONTENTS 



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Chapter VIII. On to the Rio Deseado io6 



Scotch colonists — sheep shearing — sheep — prospecting — camp by the 

 sea — divide party — Tom Hall — Rio Deseado — ducks and geese — 

 the lava flow — Billy thrown — journey northward — sale of outfit — 

 Christmas at Buenos Aires — London. 



Chapter IX. Billy's Experiences 123 



Holidays on the pampa — Lake Colhue-Huapi — bogged — visit school — 



reptile bones — no provisions — Lake Musters — persistent bull — 



more good localities — ride to Trelew. 



Chapter X. Results of Expedition 129 



Age of the rocks — rise and fall of Patagonia — deposition of bone beds — 

 origin of shingle — ancient geography of Patagonia — our collections — 

 Pyrotherium — Rhinoceros-like forms — Litopternas — Pachyruckos 

 — Marsupials — rodents. 



