58 



EXCURSION No. 2 TO AYLMER. 



The second general excursion of the Club was held on Saturday June 

 23rd, and Aylmer was the place visited. Nearly fifty members and others 

 attended. The afternoon was spent in examining the botanical, ento- 

 mological and geological wealth of the district lying north-east of the 

 steamboat wharf. Immediately upon arriving at the pine grove near 

 Mr. Richard Haycock's residence, the President announced that Messrs 

 Fletcher and McLaughlin would be leaders in entomology, Mr. Ami in 

 geology, and that he himself would guide the botanical section in the 

 absence of some of the leaders. After nearly two hours' search the 

 party reassembled at the rendezvous and addresses were then made by 

 the leaders in the different sections of the club's work. 



Mr. James Fletcher addressed the members present, and 

 spoke more particularly regarding the Ichneumons describing carefally 

 and systematically the various organs peculiar to these insects and 

 mentioning the function which each had to perform. Mr. Fletcher 

 also called the attention of his hearers to a large specimen of a grub 

 which proved vexy destructive to pine trees especially when they were 

 cut and left over one season in the bush. The depreciations caused by 

 a number of insects and the remedies to be applied were next given. 

 Mr. Henry M. Ami was then called upon to address the audience 

 on behalf of geology. Taking a specimen of the calcareo-arenaceous 

 shales of the Chazy formation which was before him, he sketched in a 

 few words the history of the origin, mode of deposition and structure 

 of such a specimen and referred to the remote ]:)eriod in geological 

 history when it was formed. It was a portion of the Chazy formation 

 of which three distinct series occured in the vicinity and had been 

 observed daring the day, each of which yielded organic remains. 

 Cyrtodonta breviuscula. Billings ; Lejoerditia Canadensis, Jones ; 

 Pleurotomaria paupera, Billings and Orthis platys, Billings were found 

 in the uppermost or limestone series in an exposure on the North side 

 of the Aylmer road east of the town. 



In the middle series of the Chazy vv'hich consists chiefly of purplish 

 -coloured chocolate brown arenaceous shales often purely argillaceous, 

 there were observed a liirgw number of fossil shells mo-t of which were 



