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In 1 vol. 8vo, with Eight folding Plates, price 18s. cloth. 



FARADAY'S EXPERIMENTAL RESEARCHES IN ELEC- 

 TRICITY. Being the Fourteen Series, from 1831, with Corrections and 

 Notes by the Author. 



SCIENTIFIC MEMOIRS ; translated from Foreign Transactions 

 and Journals. Edited by RICHARD TAYLOR, F.L.S. 

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Containing— Melloni on the Polarization of Heat.— Gauss's General Theory of 

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Just Published, in 8vo, price 6s. 



A REPORT on the PROGRESS of VEGETABLE PHYSIOLOGY 

 during the Year 1837. 

 By Dr. F. J. F. MEYEN, Professor of Botany in the University of Berlin. 

 Translated from the German by William Francis, Associate Linn. Soc. 

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 and Memoirs on this interesting branch of Botanical Science. 



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NEW ZOOLOGICAL WORK. 



On the 31st of January, 1840, will be published, in royal 8vo. Part I., price 2s. 6c?. 



of a 

 "VT ATURAL HISTORY of QUADRUPEDS, and other MAMMI- 

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 (including the principal varieties of the Human Race), with an outline of the com- 

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By WILLIAM CHARLES LINN^US MARTIN, F.L.S. 



It will be illustrated by upwards of 1000 Engravings, of which about 500 will 

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