HARDWICKE'S SCIENCE- GOS SIP. 



27 



with the same trouble and expense required to grow 

 a heath or an azalea. This little book, which is 

 most tastefully got up and printed, is illustrated by 

 woodcuts, of which one or two blocks that have 

 been lent us, we are enabled to print as specimens. 

 The most attractive features of the volume, however, 

 are the coloured plates, which are got up with a 

 brilliancy and artistic finish, 

 as well as botanical truthful- 

 ness to tint and tone, such as 

 is seldom seen in works of this 

 kind. Nothing could more 

 completely inform the orchid- 

 grower as to the habits and 

 requirements of these exotic 

 plants, than the introductory 

 chapters, all of which are 

 abuudantly illustrated, so as 

 to make the diversion tho- 

 roughly successful. Another 

 of Mr. Burbidge's books, 

 recently published, is on" Do- 

 mestic Floriculture " (Lon- 

 don : W. Blackwood & Sons). 

 It is devoted to window garden- 

 ing and floral decorations, 

 with living plants ; and gives 

 practical directions for the 

 propagation, culture, and 

 arrangement of plants and 

 flowers as domestic ornaments. 

 The illustrations are numerous, 

 and of a very high order ; and 

 the text clearly printed, on 

 good paper. As a " Manual " 

 of domestic gardening, where 

 out- door gardens are not 

 available, or to administer to 

 in-door tastes, we certainly 

 have no rival to the present 

 work. 



Dr. Carpenter's new volume 

 on " Mental Physiology " 

 (London : H. S. King & Co.) 

 occupies a good deal of debat- 

 able ground. It is written 

 in that full yet pleasant style 

 which has marked all the 

 author's works. Although a 

 large volume, the author re- 

 gards it as an expansion of 

 the outline of Psychology 

 contained in the fourth and fifth editions of 

 his "Principles of Human Physiology," pub- 

 lished in 1855. Spiritualism, Mesmerism, and 

 many other "isms," based upon an ignorance of 

 physiology and psychology, which still hold half the 

 unlettered or narrow-viewed people in the world 

 in awe, come in for a vigorous and thoroughly ex- 



haustive explanation and comparison, such as we 

 have seen nowhere else. The close affinity, yet 

 separate individuality, of body and mind are traced 

 with a clearness almost surprising. Not the least 

 interesting or important chapter in the work is that 

 devoted, to "Instincts." Natural History has 

 thrown a light on psychology and general meta- 



Fig. 16. Cypripedium Faireanum, from Burbidge's " Cool Orchids." 



physics within the last half-score years, such as was 

 never expected; whilst since the publication of 

 Bain's work, it has been impossible to study meta 

 physics without a knowledge of physiol ogy. The 

 theory that instincts are only cumulative and trans- 

 mitted habits, gained during the lifetime of the 

 variety or species possessing them, enables us to 



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