REVIEWS. 
411 
a hope that, even if it he found desirable to restrict somewhat the number 
of gratuitous recipients of these publications, no check will be put upon the 
activity of Dr. Hayden and his staff of assistants, and that we may still from 
time to time be able to announce the results of their researches. 
How far one of the works which has reached us is to be regarded as con- 
firmatory of the rumour above referred to we cannot tell, but the conclusion 
of Dr. Hayden’s prefatory note sounds very like it. This book* is a quarto 
volume of 26 beautifully executed plates, containing numerous figures of 
fossil plants from the Cretaceous and Tertiary strata of the Western Terri- 
tories, which, as Dr. Hayden tells us, have been engraved and printed for a 
period of seven years, awaiting the final report of Dr. J. S. Newberry, which 
was intended to form vol. VIII. of the quarto series of Survey Deports. The 
greater part of these plants were described as long ago as 1867, in a paper 
read before the Lyceum of Natural History of New York, and published by 
that institution in its “ Annals ” in 1868; so that, should the text never appear, 
u these plates will not be entirely lost to science,” but will serve as illustra- 
tions to the descriptions published ten years ago. The names and references 
have been appended to the figures by Professor Lesquereux. 
The splendid atlas of the Colorado Region, t lately published, is perhaps 
the grandest, certainly the most striking monument of the labours of the 
Survey over which Dr. Hayden so worthily presides. It consists of twenty 
large sheets, and illustrates the geological, topographical and other natural 
characters of an extensive district, embracing the whole of the Colorado 
territory and the adjacent portions of Utah, Arizona and New Mexico. 
Pom* of the maps are on a scale of 12 miles to the inch, and show the 
triangulation of the district, its drainage, its economic peculiarities and its 
general geology. In the third of these maps the arable and pasture lands, 
the forest and desert lands, and the mining districts are indicated by means 
of colours and symbols. Six geological maps, on a scale of four miles to the 
inch, show the "geological structure of the country in more detail than the 
smaller one above referred to ; and these same sheets, without the colours, 
serve to indicate the topography and orography of this interesting region, the 
contour lines (which also appear in the geological maps) being placed to 
show approximately differences of level of 200 feet. Two sheets of sections, 
and two of panoramic views complete the atlas, the execution of which is 
throughout admirable. In fact, with this atlas in his hand the student may 
gain a more perfect notion of the distant and wonderful Colorado region 
than he can readily obtain of localities much more generally known and 
much nearer home ; and the highest honour is due, not only to Dr. Hayden 
and his staff, but also to the American Government authorities, under whose 
auspices so magnificent a work has been accomplished. 
Of the “ Bulletin ’’J two parts have been issued during the present year, 
and these, as usual, present a varied and interesting series of articles. Zoo- 
* “ Illustrations of Cretaceous and Tertiary Plants of the Western Terri- 
tories of the United States.” — 4to. Washington, Government Printing Office, 
1878. 
t “ Geological and Geographical Atlas of Colorado and portions of adjacent 
Territories,” by F. W. Hayden, U.S. Geologist in charge. — Large folio, 1877. 
% u Bulletin of the United States Geological and Geographical Survey of 
the Territories,” vol. IV., Nos. 2 and 3, 8vo. Washington, 1878. 
