BRANNKR: THE STONE REEFS OF EKAZIL. 239 



coverod ,vith the holes ™ade by these animals. Hard as this igneous 

 rock ,s they have succeeded iu boriug holes iu some places to the depth 



On the north side of the island, where the waves are not so violent a 

 calcareous reef ,s forming among the eruptive rocks 



The coral reefi between Santo Aleim ami Maceio. There are several 

 smal reefs south of Santo Aleixo and north of Eio Formoso Of U eT 

 he largest are one lying off Gamella, and another a little to the north 

 and to the landward of it. 



At Eio Formoso the sandstone reef lies across the mouth of the river 



and corals grow over the seaward side of the sandstone. Nearest the 



tone reef t e cor.als occur in irregular patches, but further o hey 



form two well-defined reefs. The positions of these reefs are show,' oT 



the map of Eio Formoso, Figure 61, p. 83 



The channel between the corals growing ou the outer face of the stone 

 reef and the coral reef to the seaward of this has it perpendicular sid, 

 cv red wth fine specimens of living corals. The genus^W s ! p 

 c ally abundant and fine. The bottom where not covered with fine mud 



k T'"""""" " ■^- «P-™-^ °f Millepores, which are popular y 

 known hereabout .as itapitdrvjas. pfpuiaiiy 



belLrtTtrV""" "™V"^''"' »""^ °f the finest specimens 

 wnter m 18;5. Upon the extmction of the Commissao this collection 

 was turned over to the Museu Nacional in Kio de Janeiro. Th c„ I 

 from these reefs have long been burned for lime, and the most a es b 

 of the large heads have been removed by the lime-hnrners. 



of le'riveratd ^T°" '"'' ""' ""^ ^"""^^ *'"°='""''° ?<""* -■"> 

 o Tarn dl """" " P"™"^' ™'^ ^^''^^y --- "'^ % "-«" 



Off the pomt north of Tamandare (see p. 161 for chart) the coral reefs 

 ^m agam as broad double reefs, and cross the mouth of Tamandal' 

 Bay^leavmg one considerable break at the bar, and continuing sent , of 

 .t aa a sn,gle reef. This reef stands well out of water at low tide 

 Tamandare would probably be an excellent place to study the reef of 



^rto dTn 7'^'""-" '^ '-=--™s'"° offer faciHti:: 

 cannot be found at all place,,, the br,y is accessible to lar-e vessels and 



them would be advantages not to be found at many ;,laces on this c„,", 



