THE HAMILTON ASSOCIATION. 63 



nothing new, but the quarry at the Jolley Cut, worked by the Cor- 

 poration, presented a remarkably fine Fucoid from the blue building 

 limestones. I am inclined to think it an undescribed species of 

 Buthotrephis (Hall). It may be a detached branch only, yet I 

 believe now a species of the plant existed in the Palaeozoic Sea 

 which did not possess a main stem like Buthot7Xphis Gracilis. 

 Hitherto I supposed some specimens were accidentally separated 

 from the parent stock. I doubt whether this affords a satisfactory 

 explanation ■ it may be so, in some instances, but decidedly not in 

 all. I noticed recently in the waterlime beds above the Albion 

 Mills, where the quarry-men had uncovered the "Erie, Clay" or 

 " Till " resting on the upper layer a few darker patches than I had 

 previously remarked. Possibly they may represent vegetable remains 

 pushed on by a glacier. The clay appeared undisturbed, containing 

 rounded pebbles, both above and below. I doubt if modern trees 

 could produce the appearance in question, even while admitting the 

 roots sometimes strike deeply into the soil. 



FOSSILS JliECENTLY OBTAINED. 



Buthotj'ephis — New species, perhaps. 



Acidaspis tail — Not obtained hitherto. New species. 



Dalmauia Venicosa — Hall, not recorded in Hamilton List, 

 Spencer. 



Calymena Platys — Hall ; omitted also in Spencer's List. 



Cornnlites Propriiis — Hall ; not recorded as occurring at Ham- 

 ilton in the above. 



Cor?tulites, Sp. — Undetermined yet. 



Crania — ^Siluriana, Hall. 



Crania — New species perhaps ; this has a straight hinge line 

 and raised upper valve not unlike a Bonnet Limpet (not 

 known to Dr. Spencer). I believe there is no record of the 

 other as occurring in Canada. 



Several Bryozoons in the glaciated chert beds — Fenistillida, 

 Ptilodictyff, Cladoporidce, omitted in Spencer's List, and 

 not recorded by others as occurring in Canada. 



Comilaria — New species. 



The Barton water lime furnishes a Chetcetes or Nauticulipora, 

 which may be new. It is better represented by one placed 



