INTRODUCTION. XXIX 



Hunt in their recent memoirs, and conclude with a summary of 

 those brought forward by themselves against the presumed fossil. 



The " Eozoon " Limestones of Eastern Massachusetts. John B. 1871. 



Perry. Proc. Boston N.H. Soc. April 19, 1871. 

 Notices particularly the Chelmsford limestones announced, in 

 January 1870, by Sterry Hunt to contain " Eozoon /' the organic 

 origin of which is repudiated by Mr. Perry. The limestones 

 occupy " pockets, irregular and uneven cavities, or in most 

 cases, oven-shaped spaces, more or less lenticular," being " vein- 

 rocks " of more recent origin than the gneisses which enclose 

 them. The author " leaves undiscussed the question as to the 

 mode of their origin whether it were by infiltration, segre- 

 gation, or sublimation." Mr. Burbank, in his letter (A.D. 

 1870), described the mode of occurrence of the same rocks in 

 closely corresponding terms. 



A Review of Sir Charles LyelPs ' Student's Elements of Geo- 1872. 



logy/ John B. Perry. Bibliotheca Sacra. July 1872. 

 Notices unfavourably Sir Charles's acceptance of " Eozoon" 



The Microscopic Characters of a Silo-carbacid Rock from Ceylon, 1873. 

 and their bearing on the Methylotic Origin of the Lauren- 

 tian " Limestones." Dr. W. King. Geol. Mag. vol. x. 

 Jan. 1873. 

 The rock noticed (hemithrene) contains fine examples of con- 1873. 



figurations closely resembling the " canal" system '* in Canadian 



ophites. 



Die mikroscopische Berschaff. der Min. und Gesteine. Dr. 1873* 

 Ferdinand Zirkel. Pp. 313. 



Eozoon Canadense. Prof. Max Schultze. Sitzungs. der nie- 1873. 

 derrheinischen Gesell. fiir Natur- und Heilkunde. July 7, 

 1873. 



A translation is published in the ' Annals and Magazine of 

 Natural History/ ser. 4, vol. xiii. pp. 324, 325. 



Prof. Schultze, having examined specimens of the presumed 

 fossil, avers " there can be no serious doubt as to the foramini- 

 ferous nature of Eozoon Canadense" 



