PALEONTOLOGY. 291 



*' 12. Similar testimony is borne in the fact that the masses of Eozoon 

 are crossed by the veins of chrysotile which traverse the limestones 

 and are of later origin. 



"13. The whole of the forms and structures seen in Eozoon corre- 

 spond with those to be expected in a gigantic and highly generalized 

 Khizopod secreting a calcareous test, and possessing, as might be anti- 

 cipated in such early organism, structures in some degree allied to such 

 hiter forms as Stromatoporte and calcareous sponges, which in the 

 Eozoic it functionally represented." 



This book will be of great value to students of pala3ontology, espe- 

 cially to those connected with the universities and called upon to dis- 

 cuss the order of the appearance of life in the Geological Series. Sir 

 William Dawson, who has championed the organic nature of Eozoon 

 for so many years, finds no reasou to change his views, although very 

 able antagonists have presented the arguments against its organic 

 nature. 



Dr. Selwyn, the director of the Canada Survey (235) refers to Sir 

 William Dawson's paper in the Geological Magazine (GG), and expresses 

 his dissent from the views expressed by the author "in correlating 

 any of the so-called Upper Laurentiau Anorthosites of the vicinity of 

 St. Jerome or elsewhere with the Huronian rocks west of Lake Supe- 

 rior." The massive Anorthosites he continues to regard as clearly in- 

 trusive, and that the so-called Noriau or Upper Laurentian formation 

 has, as such, no existence in Canada. 



L. P. Gratacap (92) has recorded his recognition of Eozooual rock on 

 Manhattan Island. 



CORALS. 



P. M. Duncan (75) describes a new genus of Madreporaria under the 

 name of Glyphastrcva, of which the type species is Septastroea Forbesi, 

 Edwards and Ilaime, from the Tertiary deposits of Maryland. He gives 

 an amended descrii)tion of the species, pages 29, 30, with figures illus- 

 trating it, plate iii, figs 1-16. 



G. J. Hiiide (112) presents a minute and exhaustive study of the 

 distinguishing characters and nonu'uclature of the genus iSejyfastrcca, 

 D'Orb., revises the generic definition, gives a iist of the species with 

 notes upon their characters, and in a plate illustrates them. He criti- 

 cises the previously-mentioned paper of Duncan's and considers the 

 original species i^eptaatrwa Forhesl, Edw. and H., which was used as 

 the type of Duncan's genus Gh/phasfrfva to be generically identical with 

 the type species of D'Orbigny's genus ^Septd.strwa. 



C. A. White (290) describes a new genus, Hinrleastrcea (page 302) 

 of which the type species is a new species, //. discoinea, page 3G3, figs. 

 1,2,3, 4, 5, from the Ripley group (Cretaceous) of Kaufman County, 

 Texas, 



The ])aper ofD. K. Moore (189) on Fossil Corals of Franklin County, 

 Indiana, I have not seen. 



