NOTES AND EXHIBITS. 263 



specimens of Pentamerus Knighti, the association indicating that 

 the Molong and Yass-Bowning Beds are of the same geological 

 age and belong to the Silurian system. A species of the genus 

 Rafinesquina from Hatton's Corner and a Pentamerus linguifer(V) 

 from Molong were shown; as well as a remarkable slickensided 

 piece of dolerite from a dyke, met with in the workings of one of 

 the Newcastle coal mines. 



WEDNESDAY, JUNE 27th, 190G. 



The Ordinary Monthly Meeting of the Society was held in 

 the Linnean Hall, Ithaca Road, Elizabeth Bay, on Wednesday 

 evening, June 27th, 1906. 



Mr. Thos. Steel, F.C.S , F.L.S., President, in the Chair. 



The Donations and Exchanges received since the previous 

 Monthly Meeting, amounting to 8 Vols., 81 Parts or Nos., 32 

 Bulletins, 1 Report, and 12 Pamphlets, received from 54 Societies; 

 ifcc., and 2 Individuals, were laid upon the table. 



