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LETTER OF TRANSMITTAL. 
CHICAGO, ILLINOIS, November 26, Igol. 
DEAR SIR: 
By direction of the Board of Managers of The Natural History 
Survey of The Chicago Academy of Sciences, I herewith submit to you 
for publication, as Part II of Bulletin No. III of the Survey, the report on 
The Mollusca of the Chicago Area, prepared by Frank Collins Baker, 
Curator of The Chicago Academy of Sciences, to be issued under the rules 
of the Academy governing such matters, 
Respectfully, 
WILLIAM K. HIGLEY, 
THOMAS C. CHAMBERLIN, Chairman. 
President of The Chicago Academy of Sciences, 
