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BIBLIOGRAPHY. 



THE following is merely a list of works (books and papers) 

 referred to in Vols. I IV of the present Monograph. The 

 entries are extracted from a Bibliography which is now about 

 four times the length of this, and will, in all probability, be 

 considerably added to. 



The pages, plates, and text-figures enumerated are those 

 of the complete papers, whether they deal entirely with the 

 Freshwater Rhizopoda or only in part. The pages in which 

 are references to them, and the plates and text-figures illus- 

 trating them, are not separately enumerated, as is done in 

 the writer's ' Bibliography of the Tunicata/ for all such 

 references are given in the synonymies; nor are abstracts, 

 notices, or reviews of original papers or books, as in that 

 work; for it is only intended to give titles of papers, which 

 are not given in the synonymies of genera and species, and 

 fuller titles of the books with their place of publication, etc. 

 This has considerably shortened the list. A few papers 

 referred to which treat almost entirely of the Heliozoa are not 

 entered; they will be found in the Bibliography of the 

 Heliozoa in the next volume. 



The three following paragraphs, quoted from the above- 

 named work, apply also to this Bibliography. 



" With an alphabetical arrangement of the names of authors, 

 the sequence of their works is chronological so far as could 

 be ascertained. When more than one in the same year it is 

 alphabetical under the first word in the title, except when 



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