lIDGiiS LEE.— Proc. As. Soc. Bengal, 18S3. 



PLATE VI. 



{Trarv cvveved eocCemalfy withA 

 a tlwn Ca^yer ofPla/djuim/ J 



JNSTRUMENT FOR DETERMINING THE DEW-FALL 



Lithographed at the Surveyor General's Office, Calcutta, April 1883. 



