SCIENCE.— AD VERTISEMENT8. 



A Qerman " Poole's Index." 



Bibliographie der deatschen Zeitschriften Littera- 

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For Descriptive Pamphlet apply to 



M. CHAMBERLAIN. Secretary, 

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McQILL UNIVERSITY, MONTREAL. 



CHAIR OF CHEMISTRY. 



The Board of Governors is prepared to receive applica- 

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W. VAUGHAN, Secretary, McGill University, Montreal. 



SIXTH EDITION. 



THE MICROSCOPE '^SalTtST' 



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New Catalogues of Scientific Apparatus. 



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Cat. A. " The Chloride Accumulator." 



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