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LETTER OP TRANSMITTAL. 
Des Moines, Iowa, December 31, 1898. 
To His Excellency, Leslie M. Sliaiv, Governor of loiva: 
Sir — I n accordance with the provisions of title 2, chapter 5, 
section 136, code 1897. I have the honor to transmit herewith 
f ’ 
' the proceedings of the thirteenth annual session of the Iowa 
Academy of Sciences. 
With great respect, yonr obedient servant, 
H. Foster Bain, 
Secretary loiva Academy of Sciences. 
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