74 BIBLIOGRAPHY. 
they have appeared in the same journal, in which case the 
sequence is that in which they are printed.” 
“The principal divisions of a work, mostly called volumes 
or the equivalent if in a foreign language, are 
numbered in large Roman capitals unaccompanied by vol., 
tome, or Band, etc.; separately paged parts similarly in small 
Roman capitals, and parts not separately paged in Arabic 
type. . . . A-series is indicated in parentheses preceding 
the volume.” 
“The number of pages, etc., of independent publications 
is only given when it is so small that they may be considered 
pamphlets.” 
This, it may be added, is also given when the work treats 
exclusively or nearly so of the Freshwater Rhizopoda. 
In confining this Bibliography to works made use of in the 
preparation of the synonymies there is one disadvantage. 
In few cases the whole and in some cases only a few out of 
many of an author’s works on the Freshwater Rhizopoda can 
be given; an inadequate idea of their number may therefore 
be formed. This is particularly the case with the works of 
Greeff, Gruber, Maggi, and especially with those of Penard, 
who is by far our greatest authority and most prolific writer 
on the Freshwater Rhizopoda and Heliozoa. Should the 
complete Bibliography ever be published this defect will be 
remedied. 
Joun Hopkinson. 
