298 SUMMARY OF THE CONTENTS OF VOL. I. 



The coast nation of the Guaranis (Warraus), and the Mauritia palm 

 of the coasts, according to the accounts given by Bembo in the 

 Histories Venetse, and those of Raleigh, Hillhouse, and Robert and 

 Richard Schomburgk 174182 



Phenomena which long-continued drought produces in the Steppe ; 

 sand-spouts, hot winds (Mirage) ; awakening of crocodiles and 

 tortoises from long summer sleep .... 182 190 



Otomacs. General considerations on the practice of earth-eating 

 among particular nations or tribes. Clays and earths containing 

 Infusoria . . . - 190 196 



Figures graven on rocks throughout a zone running from east to west, 

 and extending from the Rupunuri, Essequibo, and the Pacaraima 

 Mountains, to Caycara and the wildernesses of the Cassiquiare. 

 Earliest notice (April 1749) of these traces of former civilization 

 in the manuscript account of the travels of the surgeon Nicolas 

 Hortsmann of Hildesheim, found among D'Anville's papers. 



196203 



The vegetable poison Curare or Ourari . ' . . . 203204 



Cataracts of the Orinoco ^> 2 7 to P- 231 - 



The Orinoco ; general view of its course. Ideas excited in Columbus 

 on seeing its embouchure. Its unknown sources are east of the 

 Mountain of Duida and the groves of Bertholletia. Causes of the 

 principal bends of the river 207 219 



The falls or rapids ; Raudal of Maypures enclosed by four streams. 

 Former state of the district. Island-like form of the rocks Keri 

 and Oco. Grandeur of the view obtained on descending the hill of 

 Manimi, where a foaming river-surface of four miles in extent pre- 

 sents itself at once to the eye. Iron-black masses of rock rise like 



