An Account of the Tidal and other Zones obsei'oed on the sur- 



face of' the Limestone RocJes on the Shores of Greece. By 



StafF-Captain Puillon-Boblaye. With a Plate * (PI. V.) 



A HE study of tke action of the sea on the rocks of the shore 

 ■will explain in a simple manner a phenomenon which has been 

 hitherto but little studied. 



The following observations on this subject apply to the lime- 

 stones of the Grecian shore, and, of them, to marbles, dolomites 

 and compact limestones. The coarse limestones (calcaire gros- 

 siere) present facts sufficiently different to require being treated 

 separately. 



In these researches I have paid that attention to the subject 

 which it appeared to me to merit ; but leisure, health, and se- 

 curity were so often wanting to the observer, that the inquiries 

 still remain very incomplete. Presuming, nevertheless, that 

 they deserve the attention of geological travellers, I venture to 

 recommend them to those who shall visit the south of France 

 and the Apennines : they will find on its shore the same geo- 

 logical relations, and be enabled to finish at leisure what I have 

 only glanced at. 



Fig. 1. The calms so frecjuent in the seas of Greece, prin- 

 cipally during the summer months, permit the steepest shores 

 to be approached without danger ; there then appears deli- 

 neated at their surface horizontal bands or zones of different 

 colours. An azure line sparkling with light marks the shore, 



" Translated by Rev. Mr Ettershank from Boue's " Journal ile Geo- 

 logic," Feb. 1831. 



