502 



ON THE IRISH TEStACEA. 



My residence having been in situations remote 

 from the coast, has prevented me from making the 

 list of the marine species more complete. The 

 variety to be met with in one day on the beach of 

 Dublin Bay and Portmarnock, exceeds any thing 

 I ever before witnessed. And it appears to me, 

 that the Land and Fresh- water Testacea, are more 

 plentiful in Ireland than in England or Scotland, 

 as almost every ditch abounds in shells , and I 

 have frequently seen old ditches cleared out, with 

 a solid mass of decayed shells, from twenty inches 

 to two feet thick at bottom. 



I have the honour to be, 



SIR, 



Your most obedient humble servant^ 

 THOs. BROWN, 



Captain Forfar Regimen^*^ 



To Professor Jameson, President 

 of the Wernerian Society, 

 4'C. Sfc. S^c. 



