July 13, ISSS.) 



SCIENCE. 



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MONTDLT MEAK I- OBARS. I-OTHKRMS. AND WIXn-DinKCTION-. MAY l'»\ REPRIXTKU IN KKDl'CKIl Kojni 

 BY I"EK.MIS>ION' OF CHIEF SilGXAL-OFFICEB. 



