141 



Compound Salt. 

 Sulphate of Bis Metal. 

 Bis Sulphate of Bis M. 

 Dis Sulphate of Bis M. 



Sulphate of Ter Metal. 

 Bis Sulphate of Ter M. 

 Ter Sulphate of Ter M. 

 Dis Sulphate of Ter M. 



Sulphate of Dis Metal. 

 B 8 Sulphate of Dis M. 

 Dis Sulphate of Dis M. 



Sulphate of Tris Metal. 

 Bis Sulphate of Tris M. 

 Dis Sulphate of Tris M. 



Sulphate of DisTer Metal. 



Bis Sulphate of DisTer M. 



Dis Sulphate of DisTer M. 

 He called the attention of the Society to an apparent deviation 

 from the principle of the nomenclature, which he adopted for the 

 sake of abhreviation, while it cannot possibly create any confusion. 

 When speaking of the combination of an acid, e. g. the sulphuric 

 with an oxide of a metal, say iron, the atomic constitution of which 

 is one atom of metal and one of oxygen, he calls the compound 

 sulphate of iron, not sulphate of oxide of iron, because every 

 chemist is aware that invariably the metal is in the state of an 

 oxide when in union with an acid. 



He concluded by inculcating the importance of chemical writers 

 and teachers employing uniformly the same nomenclature, and ex- 

 pressing his hope that the modification now proposed may meet the 

 approbation of his fellow-labourers in the Edinburgh School. 



2. Mr Stark read a communication from Dr Parnell on the dc- 



currence of the Clupea alba, or White Bait, and of the 



Raniceps trifurcatus, or Tadpole-fish, in the Frith of 



Forth. Specimens were exhibited. 



Dr Parnell endeavoured to state the specific characters by which 



