REVIEWS. 
75 
Exhibitions, on Roofs, on the Atlantic Cable, and on the effect of Impact 
on Girders. The work will no doubt be found acceptable reading enough to 
some of our readers, most of whom are probably familiar with the style of 
the well-known engineer. The several matters discussed hardly admit of 
any useful reviewing, so we shall content ourselves with a brief statement 
of what they are, in order that the reader may form some idea of the in- 
terest of the series to himself. 
The lectures are u almost exclusively intended for the moral and intel- 
lectual improvement of the engineer and artisan.” There is a lecture on 
the Applied Sciences, and another on the Present State of Progress in 
Science and Art. The former is almost entirely about steam-engines and 
the manufacture of cotton ; the latter has a broader grasp, and in places is 
of some interest. There is next a lecture on Labour, its Influences and 
Achievements, and after that one upon Literary and Scientific Institutions, 
the nature of both of which can be sufficiently divined from their titles. 
Another lecture is a sort of Humboldt’s Cosmos in twenty pages. It in- 
cludes an account of the experiments of the author conjointly with Mr. 
Hopkins and Dr. Joule, and has since received from the author the some- 
what odd title of On First Principles and the Thichness of the Earth's Crust 
experimentally considered. One other lecture is on Iron and its Appliances, 
and treats of the use of iron in the construction of steam-boilers and of 
machinery and ordnance. The essays on the Atlantic Cable, on Roofs, and 
on the machinery of the International Exhibitions, are of general interest. 
THE MANAGEMENT OF STEEL* 
T HE present edition of Mr. Ede’s little book is so much enlarged as to be 
almost a new work. We have scanned its pages with much interest. 
It could hardly have been supposed that such a readable book could be 
written on such a subject. Few would find it fail to wile away a spare 
hour or two. Expanding the title a little, the matters discussed in the 
volume are the manufacture of iron and steel, the choosing of steel for 
tools, forging iron and steel, annealing cast-iron and steel, hardening and 
tempering of cast-iron and steel, expansion and contraction of steel, shrink- 
ing of iron and steel, the case-hardening of wrought-iron, and the toughen- 
ing of mild cast-steel for guns, shot, railway bars. The whole is written 
in homely language, which runs pleasantly enough, notwithstanding the 
not unfrequent deviations from grammatical requirements. The work is so 
comprehensive in its details that it must prove, we think, extremely useful 
to anyone interested in the subject. An extract will probably give a better 
idea of it than any further comments from us : — ■ 
“ The water which is to be used for hardening steel tools, or any other 
kind of articles made of steel, should never be quite cold, but should have, 
* 11 The Management of Steel.” By George Ede ; employed at the Royal 
Gun Factories’ Department, Woolwich Arsenal. Fourth edition, revised 
and enlarged. London : William Tweedie, 1866. 
