Review of Recent Geological Literature. 45 
and belonged to the series of north-sloping valleys of which 
Seneca and Cayuga are the conspicuous members. (3). The 
largest of the eastern streams probably occupied the Onondaga 
valley, in the upper buried part of which lie the villages of 
Tully, Homer and Cortland. Freeville lies in the upper, buried 
section of the Otisco valley. 
Incidentally it should be said that it is extremely improbable 
that any large stream would develop such a direct course, 
oblique to the dip of the strata, as Mr. Carney depicts in his 
hypothetical map at the close of his article. And the reference 
to the "moraine of the second glacial epoch" is untimely since 
the moraine in discussion belongs to the "Wisconsin" epoch, 
now regarded as at least the fifth epoch of glaciation. 
H. L. F. 
REVIEW OF RECENT GEOLOGICAL 
LITERATURE. 
Revision of the Blastoidea, zvith a Proposed New Classification, and 
Description of New Species; by G. Hambach. (Tran. Acad. Sci. 
St. Louis, Vol. I, No. I, at pp., St. Louis, 1903.) 
A long needed review of the' American specieis of blastoids has final- 
ly been issued. Dr. Hambach, who probably has by far the finest col- 
lection of material in the world for systematic, morphological and pale- 
ontological study, is to be warmly congratulated for his efforts in giv- 
ing to students of this subject the benefits of his studies which have 
gone on without serious interruption for fifty years. 
"The present revision and the anatomical descriptions herein given 
are based mainly on Pentremites sulcatus, P. fioreaHs and P. conoideus, 
not because they are more abundantly represented than other species 
(for Pentremites godoni occurs in great numbers in Pulaski Co., Ken- 
tucky, as well as at Huntsville, Alabama), but the preservation of Pen- 
tremities sulcatus is so excellent that we often find the most delicate and 
fragile organs preserved, especially in those specimens which were im- 
bedded in a kind of clayey substance. I think it is not unreasonable to 
suppose that similar conditions in structure must have existed in other 
species belonging to this family." 
The structural elements are fully described in all their various as- 
pects and the history of opinion briefly stated. An especially interesting 
discovery is a plated tube projecting above the caly.x of the blastoid and 
corresponding to the anal tube so conspicuous in camarate crinoids. 
"We find on the posterior side above the anal opening, on very well 
preserved specimens, a small proboscis about one- fourth of an inch in 
