Play all audios:
ABSTRACT FOR some time past considerable attention has been given to the principles of mine ventilation; institutions, committees, and individuals have been hard at work for some years
trying to render our knowledge of this complex subject more accurate, and at the same time to express that knowledge by means of readily intelligible formulæ. It is beginning to be generally
admitted that no single formula can quite accurately express all the facts, but there are strong hopes that a reasonably simple formula giving results near enough for all practical purposes
may be the outcome. The two books now before us are evidence of the widespread interest that is being taken in the subject; both are fairly satisfactory works within their own spheres, but,
curiously enough, these spheres are entirely different. The British book is addressed essentially to students, the American book essentially to mining engineers. Thus it is that in the
former it is thought necessary to give such elementary information as that “inversely means in the opposite direction,” and to conclude each chapter with a series of questions, adapted
apparently to the capacity of elementary students, whilst in the latter attempts are made to discuss such advanced problems as the economics of ventilation, and to solve such problems as,
for example, “What is the most economic size of an airway under given conditions?” It must unfortunately be admitted that the author's solution of the problem is neither complete nor
correct, but the fact that he attempts to solve it indicates the stage to which the work is carried. The Principles and Practice of Mine Ventilation: being a Treatise on Modern Methods of
Mine Ventialtion and Machinery, with Consideration of Deep Mine Problems, Explosions, Fires, Rescue and Recovery Work, and Cognate Subjects. By Prof. David Penman Dr. J. S. Penman. Pp. viii
+ 303. (London: Charles Griffin and Co., Ltd., 1927.) 21_s_. net. Ventilation of Mines. By Prof. Walter S. Weeks. Pp. x + 228. (New York: McGraw-Hill Book Co., Inc.; London: McGraw-Hill
Publishing Co., Ltd., 1926.) 15_s_. net. Access through your institution Buy or subscribe This is a preview of subscription content, access via your institution ACCESS OPTIONS Access through
your institution Subscribe to this journal Receive 51 print issues and online access $199.00 per year only $3.90 per issue Learn more Buy this article * Purchase on SpringerLink * Instant
access to full article PDF Buy now Prices may be subject to local taxes which are calculated during checkout ADDITIONAL ACCESS OPTIONS: * Log in * Learn about institutional subscriptions *
Read our FAQs * Contact customer support RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE _The Principles and Practice of Mine Ventilation: being a
Treatise on Modern Methods of Mine Ventialtion and Machinery, with Consideration of Deep Mine Problems, Explosions, Fires, Rescue and Recovery Work, and Cognate Subjects Ventilation of
Mines_ . _Nature_ 120, 113–114 (1927). https://doi.org/10.1038/120113a0 Download citation * Issue Date: 23 July 1927 * DOI: https://doi.org/10.1038/120113a0 SHARE THIS ARTICLE Anyone you
share the following link with will be able to read this content: Get shareable link Sorry, a shareable link is not currently available for this article. Copy to clipboard Provided by the
Springer Nature SharedIt content-sharing initiative