LXXIV ROYAL SOCIETY OF CANADA 



continuous observation in these harbours. The height of extreme high 

 and low water, and other tide levels, are given with reference to bench- 

 marks, for a number of localities along the St. Lawrence, in the Bay 

 of Fundy, and elsewhere. Although there is as yet no general system 

 of levels in Canada, these results are of value locally in the meantime; 

 and they also furnish a basis for any more extended geodetic levelling 

 which may be undertaken. 



