Explanation. There are general heads under which titles are 
grouped, viz: Cretaceous, bibliography, geology, etc. Titles relating to 
minerals are divided into two groups, viz: those referring to mineral 
species, generally "reviewed", and those relating to economic or other 
aspects. In the former group the authors' names are not given; in the 
latter they are. "Fossils" are also divided into two groups, viz: paleon- 
tological papers "reviewed", and papers consisting of original descrip- 
tions of species. 
In all cases the arrangement of titles under the general heads, and 
under the groups, is chronological and not alphabetical. 
The index is not an alphabetical one, with many cross-references, 
but, under a general alphabetical regimen it is geographical and chron- 
ological. Subjects relating to each state are grouped under the name 
of the state: but all the Canadian states, including Newfoundland, are 
listed under the head of "Canada". 
Abbreviations. (abs)=abstract; (Am. oom) = Report of the 
American committee at the International Congress of Geologists, at 
the London session, 1888; (cit.) = cited; (rev.)=reviewed; (rem.)=re- 
mark; (p. s. n.)=personal or scientific note; (ed com.)=editoriaIcom 
ment; (obit.) =obituary notice. 
