EE VIEWS. 
483 
under certain conditions exert on each other.” The phenomena of induction 
are explained upon a theory which is in accordance with that of Faraday. In 
the section devoted to galvanism we observe that the British Association B. A. 
unit of resistance has been adopted. The chapter on electric telegraphs is 
very instructive, and contains a full and illustrated description of the 
mechanism of Morse’s instrument. There is a paragraph, too, on the chrono- 
logy of the telegraph, which will be read with much interest. The appendix 
contains an account of Wilde’s magnetic-electro machine, and an excellent 
chapter on the construction of induction coils. 
POPULAR PHYSIOLOGY* 
T HE little volume lying on our table is one of Buckmaster’s series, and 
is written by Mr. Angell, of Manchester. It is by no means a bad 
introduction to physiology, and may be read with profit by those who 
are entirely ignorant of the science of life. Its chief feature, and the 
one which we apprehend forms its principal recommendation, is that it is 
systematically put together, the sections being short and well arranged. It 
is to be regretted that the author has dealt so much with facts and assertions, 
and so little with the grand principles of physiology. The illustrations are 
not effective, though in nearly all instances they are copies of those in Milne- 
Edwards’s and other manuals. We should like to know why it is that Mr. 
Buckmaster’s name is printed upon the title-page as though he were virtually 
the author. How surprised we should be to see “ Longman’s Comparative 
Anatomy of the Vertebrates, by Mr. Owen,” or “Churchill’s Principles of 
Physiology, by Dr. Carpenter ! ” 
SIGHT AND HEARING.f 
M R. WHARTON JONES has here given us a popular account of the 
eye and ear, and of their pathology and treatment. The earlier 
chapters are devoted to the physiology of vision, and are clear, though by no 
means so full as they might have been. We question the correctness of some 
of the optical diagrams, but in their construction Mr. Jones has only followed 
the too prevalent custom of confounding the axial and lateral rays in illus- 
trating the formation of images by refracting media. 
* “ Buckmaster’s Elements of Animal Physiology.” By J ohn Angell, 
Government Science Teacher. London : Longman & Co., 1866. 
f “Defects of Sight and Hearing.” By T. Wharton Jones, F.R.S., 
F.R.C.S. 2nd edition. London : Churchill, 1866. 
