— indg 
Book Notices. 305. 
vol. xv which are of most scientific interest are Steam and Steam ine, 
Steel, Sagar, Symbols, Telegraph, Telescope, Thermometer, Tides, Tobacco, 
» The most elaborate article in this volume is very naturally United 
Slates, which fills 122 pages, and contains a vast amount of valuable 
matter in a compact form, 
In volume xvi we notice the following titles of scientific interest: Vol- 
no, Warming and Ventilation, Weights and Measures, Walrus, Whale, 
Wheat fly and Moth, Winds, Zeuglodon, Zine, Zoology, and many more. 
A list of contributors, with the titles of their articles, is given in vol. xvi. 
Among them we find very many of our best authors in all departments. 
A mere enumeration of the principal ones would exceed our present lim- 
Us. One of the daily journals gives some statistics of this great literary 
enterprise, from which we borrow a few items?’ 
The present work of Messrs. G. Ripley and C. A. Dana is the first 
original general Cyclopedia completed in this country. Dr. Lieber’s valua- 
ble translation of the German Conversations-Lexicon, made many years ago 
by that industrious and erudite scholar, with the assistance of a staff of 
has left it ehind ; and no attempt was ever made, we believe, (beyond 
the issue of one supplementary volume, the xivth,) to bring up arrears in 
Monthly supplements like those printed by M Brock er- 
specially conversant. 
The labor of revising the articles as written, and again revising the 
0 
n 
Were sent to the authors, or to experts, for verification and correction. 
The cost of the revision alone amounts to considerably over twenty thou- 
sand dollars, 
The number of titles or subjects treated is about twenty-seven thousand 
804 pages, of 52 million “ems” printers tenga requiring, for 
° copies printed, over 12,600 reams of white paper. the 
tebellion, over 17,000 subscribers to the work were registered, of which 
ral sta! : se 
the enterprising publishers, have invested over four 
thousand dollars in this great literary venture, of 
co ee 
