Bird, Henry Lonsdale2014-08-282026-09-292014-08-282026-09-291950http://arks.princeton.edu/ark:/88435/dsp017h149q13chttps://theses-dissertations.princeton.edu/handle/88435/dsp017h149q13c38 PagesA Study of Two Species of a Fresh Water Sponge Genus TrochospongillaPrinceton University Senior ThesesWalk-in Access. This thesis can only be viewed on computer terminals at the <a href=http://mudd.princeton.edu>Mudd Manuscript Library</a>.