LETTER OF TRANSM1TTAL 



CHICAGO, ILL., March 25, 1902. 

 DEAR SIR: 



By direction of the Board of Managers of The Nat- 

 ural History Survey of The Chicago Academy of Sciences, I 

 herewith submit to you for publication a report on The Min- 

 erals of the Chicago Area, prepared by Dr. Alja Robinson 

 Crook, Northwestern University, to be issued under the rules 

 of the Academy governing such matters, as -Bulletin No. V, 

 of the Survey. Respectfully, 



WILLIAM K. HIGLEY, 



Chairman. 

 To THOMAS C. CHAMBERLIN, 



President of The Chicago Academy of Sciences. 



