HAMILTON ^SCIENTIFIC ASSOCIATION. 115 



Additional Notes on Late Collecting Season 



By C, C. Grant, 



Dkcember 30, 1905. 



When I placed before the Section recently some notes I had 

 taken during the past collecting season in submitting for inspection 

 the specimens discovered, I think I mentioned I had a few addi- 

 tional ones^ which perhaps had better remain over for the present. 



On consulting A. T. Neill, Chairman of the Section, we con- 

 cluded, as there appeared some chance of getting a few new mem- 

 bers, to bring to their notice any further facts respecting the Palae- 

 ontology of the district, which may have been inadequately repre- 

 sented in former papers. 



Now while it is generally known that the Silurian rocks about 

 this locality have produced an extraordinary number of graptolites 

 and fossil sponges, very few, I believe, imagine that it is also rich 

 in other organic remains — fucoids, lamellibrauchs, corals, brachi- 

 pods, bryozoons. Before grasses and weeds covered the soft Clin- 

 ton shales which the quarrymen dumped down the hill-slope to get 

 at the Medina freestone beds for building and ornamental purposes, 

 one experienced little difficulty in securing many fossils in fair 

 preservation. 



For several years past the writer noticed a smooth skinlike 

 process — generally on a plain globular sponge— which he supposed 

 may have represented a portion of the organism itself. lyater on^ 

 he felt inclined to imagine it may have been a parasite bryozoon at- 

 tached in the same way as the brachipod Whitfieldella Jiavifonnis , 

 so often found in a like manner. The latter appears to be the cor- 

 rect view judging from specimens recently obtained and submitted 

 for examination. 



In the same field where the bryozoon produced turned up was 



