Others were found 

 washed upon the beaches, 

 but much broken and worn. 

 The millepores are uncom- 

 mon, and the specimens 

 obtained are poor and gen- 

 erally worn. None of the 

 corals growing about the 

 shores of Fernando are 

 abundant, and the speci- 

 mens are very poor as com- 

 pared with those growing 

 along the Pernambuco and 

 Alagoas coast reefs. 



There are certain calca- 

 reous growths about the 

 shores of Fernando de No- 

 ronha that are worthy of 

 mention. These are formed 

 by Serpulae, corallines, and 

 other lime-secreting organ- 

 isms growing upon volcanic 

 rocks in place, and building 

 up stony, calcareous rings 

 that enclose terraced basins 

 of various sizes. 



The accompanying sketch 

 is of one of tlie large nests 

 of diminutive basins to the 

 east of !Morro Francez. In 

 general appearance these 

 basins resemble the traver- 

 tine deposits of Gardner's 

 River in the Yellowstone 

 National Park. The pools 

 are full of animal life, and 

 the water is constantly re- 

 newed by the waves break- 

 ing over the rocks. 



Similar deposits about a 

 mile long grow \ipon the 

 rocks along the southern 

 coast of the island in front 



