^^^,^O^SST^TEL.Bo,,,^^^ 



ATURAL History, 



BULLETIN NO. 6. 



I. The Regulative Action* of Birds uroN Insect 



Oscillations, 'S 



II. The Food Relations of the Carabid.e and 



COCCINELUD.K, ------ 33 



III. The Food of the Smaller Fresh - Water 



Fishes, - - 65 



IV. The First Food op the Common White-Fish 



(Coregonus clupeifonnis), - - - - 95 



Edward Hine, Printer, Adams St., Corner Harrison, Peoria, -Illinois 



May, 1883. 



