CHAPTER XII 



The Union of Yorkshire Naturalists Lecture at Malton 

 Agricultural controversy Fossil Fucoids Memoir on 

 undescribed tracks of invertebrate animals from the 

 Yoredale rocks Imitative water marks Sigillaria and 

 Stigmaria Monograph for the Palasontographical So- 

 ciety The Clayton fossil tree Positions of responsi- 

 bility and distinction Meeting of British Association 

 in Manchester. 



THE Yorkshire Union of Naturalists, of which I 

 first became an honorary member and subsequently 

 president, is one of the most influential and energetic 

 of the many scientific institutions that exist in 

 the country. Its centre and the residence of 

 its official secretaries is at Leeds, but it has an 

 immense number of local centres or branch institu- 

 tions diffused throughout the country, at one or 

 another of which its annual meetings are held. It 

 is therefore largely a peripatetic society, but its more 

 energetic supporters were to be found in the districts 

 round Leeds, Bradford, and Halifax. 



During the summer a succession of excursions is 

 made to the more scientifically interesting localities 



