30 SCIENTIFIC CATALOGUE. 



those who understand little of the scientific parts of the work will 

 linger over the mysterious page of nature here unfolded to their 

 view" John Bull. 



Mansfield (C. B.) A THEORY OF SALTS. A Treatise 

 on the Constitution of Bipolar (two-membered) Chemical Com- 

 pounds. By the late CHARLES BLACHFORD MANSFIELD. Crown 

 8vo. 14-r. 



" Mansfield" says the editor, "wrote this book to defend the prin- 

 ciple that the fact of voltaic decomposition afforded the true indi- 

 cation, if properly interpreted, of the nature of the saline structure, 

 and of the atomicity of the elements that built it up. No chemist 

 will peruse this book without feeling that he is in the presence of an 

 original thinker, whose pages are continually stiggestive, even 

 though their general argument may not be entirely concurrent in 

 direction with that of modern chemical thought." 



Mivart (St. George). ON THE GENESIS OF SPECIES. 

 By ST. GEORGE MIVART, F.R.S. Crown 8vo. Second Edition, 

 to which notes have been added in reference and reply to Darwin's 

 "Descent of Man." With numerous Illustrations, pp. xv. 296. 

 5tf. 



The aim of the author is to support the doctrine that the various 

 species have been evolved by ordinary natural laws (for the most 

 part unknown) controlled by the subordinate action of "natural 

 selection" and at the same time to remind some that there is and 

 can be absolutely nothing in physical science which forbids them to 

 regard those natural laws as acting with the Divine concurrence, 

 and in obedience to a creative fiat originally imposed on the primeval 

 cosmos, "in the beginning," by its Creator, its Upholder, and its 

 Lord. Nearly fifty woodcuts illustrate the letter-press, and a com- 

 plete index makes all references extremely easy. Canon Kingsley, 

 in his address to the '' Devonshire Association," says, "Let me re- 

 commend earnestly to you, as a specimen of what can be said on the 

 other side, the ' Genesis of Species,' by Mr. St. George Mivart, 

 F.R.S. , a book which I am happy to say has been received elsewhere 

 as it has deserved, and, I trust, will be received so among you" 

 "In no woi'k in the English language has this great controversy 

 been treated at once with the same broad and vigorous grasp 

 tf facts, and the same liberal and candid temper." Saturday 

 Review. 



