Ij8 DWIGHT ELMER MINNICH. 



4. These chemical sense organs can distinguish water from 

 paraffin oil, and water from iM saccharose solution. 



5. The oral lobes of the proboscis are also equipped with 

 organs of taste. 



6. The chemoreceptors of the oral lobes are more sensitive to 

 iM saccharose than are the chemoreceptors of the tarsi. 



BIBLIOGRAPHY. 

 Balss, H. 



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