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LEA & BLANCHARD'S NEW PUBLICATIONS. \\ 



SUPPLEMENT TO THE ENCYCLOPEDIA AMERICANA, UP TO THE YEAR 1847, 



ENCYCLOPEDIA AMERICANA-Supplementary Vol. 

 A POPULAR DICTIONARY 



OF ARTS, SCIENCES, LITERATURE, HISTORY, POLITICS 

 AND BIOGRAPHY. 



VOL. XIV. 



EDITED BY HENRY VETHAKE, LL.D., 



Vice-Provost and Professor of Mathematics in the Universi^of Pennsylvania, Author of "A Treatise 



on Political Economy." 



In One large Octavo Volume of over Six Hundred and Fifty double columned pages. 



The numerous subscribers who have been waiting the completion of this volume can now 

 perfect their sets, and all who want a Register of the Events of the last Fifteen Years, for 

 the Whole World, particularly embracing interesting scientific investigations and discover- 

 ies, can obtain this volume separately, price Two Dollars uncut in cloth, or Two Dollars 

 and Fifty Cents in leather, to match the styles in which the publishers have been selling sets. 



Subscribers in the large cities can be supplied on application at any of the principal book- 

 stores; and persons residing in the country can have their sets matched by sending a volume 

 in charge of friends visiting the city. 



Complete sets furnished at very low prices in various bindings. 



"The Conversations Lexikon (Encyclopaedia Americana) has become a household book in all th 

 intelligent families in America, and is undoubtedly the best depository of biographical, historical, geo- 

 graphical and political information of that kind which discriminating readers require. There is in the 

 present volume much matter purely scientific, which was all the more acceptable to us that it was 

 unexpected." Silliman's Journal. 



THE CHEMISTRY OF THE FOUR SEASONS A NEW WORE. 

 THE CHEMISTRY OF THE FOUR SEASONS, 



SPRING, SUMMER, AUTUMN AND WINTER. 



AN ESSAY PRINCIPALLY CONCERNING NATURAL PHENOMENA ADMITTING OF 



ILLUSTRATION BY CHEMICAL SCIENCE, AND ILLUSTRATING PASSAGES 



OF SCRIPTURE. 



BY THOMAS GRIFFITHS, 



Professor of Chemistry in the Medical College of St. Bartholomew's Hospital, Ac. 



In One very neat Volume, royal 12mo., of Four Hundred and Fifty large pages, extra ckth, 



illustrated unth numerous Woodcuts. 



"The title-page copied at the head of this article sufficiently expresses the objects of the work, and 

 the subjects of which it treats. It is a token from the laboratory, designed for the parlor. The dis- 

 courses are adapted to the comprehension of those not familiar with the technicalities and details of 

 chemistry, and are written in a pleasing style. The mechanical execution of the work is neat and 

 tasteful. Altogether it is a beautiful volume." Buffalo Med. Journal. 



YOUATT ON THE DOG. 



THE DOG. 



BY WILLIAM YOUATT. 



WITH NUMEROUS AND BEAUTIFUL ILLUSTRATIONS. 

 EDITED BY E. J. LEWIS, M.D., &c. &c. 



In One beautifully printed Volume. Crown Octavo, with Twenty-four Plates, done up in 



rich crimson extra cloth. 



"With this explanation of his connection with the work he leaves it, in the hope that it 

 may prove of value to the sportsman from its immediate relation to his stirring pursuits; to 

 the general reader from the large amount of curious information collected in its pages; and 

 to the medical student from the light it sheds on the pathology and disease* of the dog, by 

 which he will be surprised to learn how many ills that animal shares in common with the 

 human race." EDITOR'S PREFACE. 



