branner: the stone reefs of brazil. 283 



PLATE 59. 



View of the stone reef at Pernambiico, drawn by F. Post in 1645 and published 

 by Barlaeus in 1647. See page 202. 



PLATE 60. 



Map of the stone reef at Cabo Santo Agostinlio, pubhshed by Caspar Barlaeus in 

 1647. (Rerum per octennium in Brasilia op. p. 140.) See page 71. 



PLATE 61. 



Map of the stone reef at Natal, Rio Grande do Norte, published by Barlaeus in 

 1647. Compare Fig. 13, page 37. 



PLATE 62. 



Fortaleza dos Reis Magos — the fort on the sandstone reef at Natal, Rio Grande do 

 Norte. Probably drawn by F. Post about 1645 and published by Barlaeus in 

 1647. Compare Plates 20 a and 20 b. 



PLATE 63. 



Tertiary (?) bluffs at Bahia Formosa, State of Rio Grande do Norte. The sloping 

 upper beds are old sand dunes. See page 122. 



PLATE 64. 



Tertiary (?) bluff at Pipa, with brown sand on top of it. Looking westward from 

 the anchorage. Bluff about two hundred feet high. See also Plate 63. 



PLATE 65. 



Characteristic topography of the Pernambuco coastal sand plain near Boa Viagem. 

 See pages 137 and 138. 



PLATE 66. 

 Tertiary bluff at Santa Cruz, State of Bahia. See pages 141-142. 



PLATE 67. 

 The gorge of the Rio Sao Francisco, at Piranhas. Sec page 143. 



PLATE 68. 



An elevated beach at Ponta de Areia, Bay of Bahia, two kilometres north of Suo 

 Thome. See page 150. 



