."--_Bristol Mercury._

"The author has endeavoured to treat the question in simple rather
than in technical language, and he has lucidly catalogued the most
dangerous trades and their symptoms, and in each case specified the
best methods of dealing with them.... To those for whom the volume
is specially designed, Dr. Parry's treatise should be a useful
handbook."--_Sheffield Independent._

"A very useful manual for employers of labour, foremen, intelligent
workmen, and, in spite of the author's modesty, for medical men. We
have the peculiar risks and dangers of all the dangerous trades
carefully described; the mode of action of various chemicals, etc.,
used in different industries given, with full directions how to
minimise unavoidable risks."--_Leeds Mercury._

"Most of the trades in the country are alluded to, and upon those
that are dangerous the necessary attention is bestowed, and means
are recommended whereby danger may be prevented or lessened. The
author has evidently studied his subject with care, and has made
full use of the experience of others who have had a larger insight
into the industries of the country."--_British Medical Journal._

"The work is well written and printed, and its verbiage such as to
be comprehensible to the workman no less than to the master. The
careful and general perusal of a work of this nature cannot but be
attended by beneficial results of a far-reaching nature, and we
therefore heartily recommend the book to our readers. Medical
Officers of Health and Sanitary Inspectors especially should find
the work of great interest."--_Sanitary Record._

"It is written in simple language, and its instructions can be
easily followed.... There are some employers, at any rate, who are
more ignorant of, than indifferent to, the slow murder of their
workpeople, and if the facts so succinctly set forth in this book
were brought to their notice, and if the Trade Unions made it their
business to insist on the observance of the better conditions Dr.
Parry described, much might be done to lessen the workman's
peril."--_Weekly Times and Echo._

* * * * *

=PRACTICAL X RAY WORK.= By FRANK T. ADDYMAN,

B.Sc. (Lond.), F.I.C., Member of the Roentgen Society of London;
Radiographer to St. George's Hospital;