SUPPLEMENTARY NOTE TO THE 

 FOURTH EDITION, 1891. 



Twelve years constitute a long period in the history of a science 

 whose "goal to-day is its starting-point to-morrow," even with 

 reference to any one limited field. Since the appearance of the 

 Supplement to Acadian Geology, appended to the third edition 

 (1878), much has been done in the geology of the Eastern Maritime 

 Provinces of Canada by the addition of new species of fossils, by the 

 working out of the geological details of formations, and by the develop- 

 ment of useful minerals. In the present note I shall endeavour to 

 mention the more important of these contributions, and to sum up 

 their contents in so far as they add to or correct the observations and 

 conclusions of the early and unaided researches embodied in a work 

 which was a labour of love, as a contribution to the material interests 

 and scientific reputation of my native country and its sister provinces 

 by the sea. 



Under the auspices of the Geological Survey of Canada, several 

 able labourers have been in the field, and have contributed to the 

 reports of the Survey from 1878 to 1888. 



Dr R. W. Ells has examined and reported on the Pre- Silurian 

 rocks of Southern New Brunswick (1877-78), on the geology of 

 Northern New Brunswick (1879-80), on Prince Edward Island, m- 

 cluding the Permian and Triassic (1882-4), on parts of New Bruns- 

 wick and Nova Scotia, 1885. 



Mr Hugh Fletcher, in recent years, with the aid of Mr Faribault, 

 has laboured on the geology of Cape Breton and Eastern Nova 

 Scotia, and has minutely described and mapped these regions on a 

 large scale (Reports, 1879 to 1888). 



The late Mr James Richardson visited and reported on the 



