136 Scientific Intelligence. 
presents his geological views and criticisms with great eer: 
which is consistent with the fact of his limited ‘knowledge of t 
subject. 
8. Geological Survey of Towa.—The State of Towa has ordered 
the printing of three ——— copies of the Report of the oe 
= sen State by Prof. White. The work will consist of two royal 
volumes, in the aie of Hall’s Geology of Iowa and of the 
Tllino’s Ganingieal Report, and will be well illustrated. We regret 
to have to add that the Toataleans has discontinued the Survey. 
III. ZOOLOGY. 
1. Die bis jetat bekannten Schildkroten, u. d. bei Ketheim u. 
Hannover neu aufgefunden altesten Arten derse elben ; von Dr. 
. A. Maa 
Me er’s Paleontographica).—This useful work, a 4to of 146 pp., 
is contributed by Dr. Maack, gee arrival in the United States 
ee i useu 
the student of the subject The stratigraphical table given, adds 
to its value. From it we perceive that the Tertiaries embrace the 
C us 
of 
successively fewer. e upper Jurassic of Switzerland, Bavaria 
and Hanover have furnished the oldest known Testidinata, unless 
the Chelytherium of the Wirtembergian Trias belong to the order, 
a point still doubtful. The number of Jurassic a ae was 
15, to which Dr, Maack adds 3, based on remains tly from 
Han : pee from a stratum of prior ee to those of ‘Switzerland 
and Ba 
isla one of the 1 ain divisions be at order , the Pleurodira, 
is included among the ydide, s it embraces a series 
of families distinguished by hatiral. pa , aispila to those defin- 
ing the remaining families from each other.* consequence - 
ferred to it. This is done because the sersent pair of 
thoracic bones which characterizes it is Seas in a radimental 
* See Proc, Acad. Nat. Sci.. 1868, p. 282. | 
