REVIEWS 203 
proposed the term Kinderhook to cover the beds, and named the 
Burlington, lowa, section for one of the three type sections. ‘The best 
known collection of fossils from Burlington has been that belonging 
to the University of Michigan, and known commonly as the ‘“ White 
collection.” Descriptions of the fossils in this have been published by 
C. A. White, C. A. White and R. P. Whitfield, and by A. Winchell, and 
these descriptions have been the ones principally used heretofore in 
studying Kinderhook species. The descriptions were, however, in 
many cases unsatisfactory, and were seriously limited in usefulness by 
the fact that many of the species were not figured. Under the cir- 
cumstances it is not surprising that the early doubts as to the age and 
divisions of the Kinderhook have not been altogether cleared away. 
Mr. Weller has made careful use of. the original White and other col- 
lections, and has supplemented his data by notes and specimens taken 
at Burlington. He has found that the Kinderhook includes seven 
distinct faunal zones, and in the series of papers now being published 
he is describing and figuring the fossils from these individual zones. 
It proves that certain of them have strong Devonian affinities, while 
others are to be assigned to the Carboniferous. Much of the confusion 
has come from the failure to distinguish the individual bed from which 
the species were collected. In the case of the Chonopectus sandstone the 
brachiopods are, for the most part, strongly Carboniferous in aspect. 
The pelecypods, gasteropods, and cephalopods, are predominantly 
Devonian as is the larger number of the total of 81 species recognized. 
The author regards this, however, as a probable instance of the persis- 
tance into Carboniferous time of certain favored Devonian forms. The 
other view, that these are the earliest and initiatory Carboniferous 
forms appearing in time properly Devonian, is not, however, as yet, 
excluded. 
As a whole the paper is one of wide interest and value, and will 
prove very suggestive and useful. 
Isl, 183 15) 
