FoL. XII. 



SEPTEMBER, 1851. 



No. 35 



SCIENCE 



k^ J 



Professobs B. SrLLIMAN, B. SILLIMAN, Jr., 



. AND 



JAMES D. DANA. 



THE DEPARTMENTS 



CHEMISTRY 



WOLCOTT GIBBS 



SECOKD SERIES 



No. 35. — SEPTEMBER, 1851 



NEW HAVEN: 



PUBLISHED BY THE EDITORS. 



[fO» AGBWTS AbOEESSES, SBE VKXt TACXJ] 



Printed by B. L. Ha»les— Fnnter to Yale College, 



^^gre, tfpmd ^^uarterly in advance^ tmdi 



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