Geology und Geography. 391 



Mr Murchison stated, that he had discovered fossi fishes in 

 the old red sandstone of the district which he has lately exa- 

 mined, which Mr Agassiz has declared to be identical with the 

 ichthyohtes of Caithness. Mr M. is of opinion that the Silu- 

 rian system of rocks exists to a very considerable extent in Nor- 

 way. 



Some very interesting observations on the transition series 

 were made by Mr Greenough and Professor Phillips. 



Dr Daubeny requested the co-operation of the Section, in 

 furthering his inquiries into the nature and phenomena of mi- 

 neral waters. 



16. Dr Jacob read a notice regarding some fossil madrepores 



from the Queen's County. 



17. Professor Phillips made a communication regarding the 

 occurrence of a tertiary deposit on the coast of the north of 

 England, near Burhngton. 



18. Professor Sedgwick read a letter from Mr Lyell on the 

 fossils of the Crag. 



Monday, \Oth August. 

 Section C. — Chemistry and Mineralogy. 



President. — Dr Thomas Thomson. 

 Vice-Presidents.— Bt Daltok and Dr Bahker. 



Secretaries Dr Afjohn and Mr Johnston. 



Committee.— Mt Davy, Mr Vernon Harcourt, Dr Daubeny, Mr Graham, Mr 

 Connell, Dr R. D. Thomson, Mr Kane, Mr Ferguson, Mr Scanlan, Dr 

 Geoghegan, &c. 



The Secretary presented to the Section printed copies of ta- 

 bles, exhibiting at a single view the most important properties 

 of simple and compound bodies, for defraying the expenses of 

 the printing of which L. 10 had been allocated at the last meet- 

 ing of the Association. 



1. A paper was then read by Mr Davy, upon the subject of 

 the corrosion of iron by sea water. The observations had par- 

 ticular reference to the injury sustained by the iron of buoys 



