240 Scientific Intelligence. 



of this region "has the enormous thickness of over 20,000 feet," 

 and is a conformable series, beginning with the Bear River forma- 

 tion, and closing with the Adaville formations Lower Laramie. 

 Then followed "a long period of folding, faulting and erosion." 

 Angularly unconformable with the Cretaceous series are the 

 Evanston, Almy and Fowkes formations, followed by another 

 period of " folding and erosion of great magnitude though of 

 much less importance" than the earlier one. The Almy and 

 Fowkes formations " have without exception been considered 

 Eocene," and, as they are conformable with the Evanston, all are 

 regarded by Veatch as best placed in the Eocene. "The uncom- 

 formity at the base of this series [Evanston, Almy, and Fowkes] 

 amounts to over 20,000 feet ; that at the top amounts to perhaps 

 5,000 feet, but this is of much less relative significance than the 

 figures indicate, because the movements of the second disturb- 

 ance were along lines of weakness produced by the first. The 

 physical break between this group and the known Cretaceous 

 beds is thus greater than the break between it and the known 

 Eocene, and, on purely physical grounds, this group would seem 

 to belong rather to the Eocene than to the Cretaceous " (p. 75-76). 



c. s. 



5. Einfuhrungin die Paldontplogie ; von Gustav Steinmann. 

 Second edition, pp. 542, with 902 text-figures. Leipzig, 1907 

 (Wilhelm Engelmann). — This well-known introduction to paleon- 

 tology has been enlarged and brought up to date. It treats of 

 plants (pp. 13-74), invertebrates (75-388), and vertebrates (389- 

 514). All of the more important groups of forms found fossil 

 are defined and illustrated, so that any beginner in paleontology 

 may obtain a good knowledge of the hard parts of extinct organ- 

 isms. No detailed classifications appear, nor is there any extended 

 discussion of lines of descent. The book presents what is known 

 of the leading forms in each group of organisms in short synoptic 

 form. The illustrations are wood-cuts and line drawings, made 

 especially for this book, and are abundant and adequate, c. s. 



6. Niagara Stromatoporoids ; by W. A. Parks. Univ. 

 Toronto Studies, Geol. Ser., 1908, pp. 175-240, pis. 7-14.— Pro- 

 fessor Parks here continues his detailed studies on American 

 Silurian stromatoporoids. At least 34 forms are described, many 

 being new. Chalazodes is the only new genus. c. s. 



7. On an Occurrence of Hybocystis in Ontario; by W. A. 

 Parks. Ottawa Nat., XXI, 1908, pp. 232-236, pi. 2.— Yery 

 excellent material of this obscure echinoderm has been found near 

 Elton, Ontario. The material is described and figured in detail, 

 indicating, the reviewer thinks, cystid rather than blastid char- 

 acters, c. s. 



II. Miscellaneous Scientific Intelligence. 



1. Publications of the Japanese Earthquake Investigation 

 Committee.— -N os. 22 A and 22 C of this issue have recently 

 been received, also Vol. II, No. 1, of the Bulletin of the Commit- 

 tee. This last contains 8 articles by Prof. F. Omori, all of inter- 



