"54 Correspondence — J. W. Spencer — G. W. Lamplugh. 



Since this table was published I have obtained from Bedruthan. 

 a slab on which there are fragments of Pteroconus mirus, and another 

 organism of which Dr. Smith Woodward writes : " I think the 

 Teticulated piece belongs to Pteraspis, but it would have been more 

 satisfactory to find the outer striated layer." Howard Fox. 



Falmouth, January 5th, 1903. 



THE GEOLOGY OF BARBADOS. 



Sir, — My extended acquaintance with the geology of Barbados 

 has led me to concur fully in the last paragraph of the recent article 

 on the subject by Professor Harrison and Mr. Jukes-Browne, and 

 especially in the admission of these authors that "fresh observations 

 are required." For some weeks prior to the appeai'ance of the 

 article, indeed, I had been in correspondence with one of the authors 

 of the article, who proposed a joint re-examination of the ground ; 

 I immediately accepted the suggestion, and began planning another 

 trip to Barbados with the object of demonstrating my observations 

 on the ground, and, if practicable, making additional collections of 

 fossils ; and I had hoped that public discussion would be withheld 

 pending this appeal to the court of field observation. In view of 

 the prospective meeting on the ground, I am content to withhold 

 detailed criticism of the article in question, and especially of the 

 restricted view taken by the authors, who seem satisfied to discuss 

 the geological history of a single spot in a great province without 

 I'eference to the records presented by other portions of the same 

 province. I am confident that the joint work on the ground will 

 enable me to present this broader view, as well as the local details, 

 more successfully than I have been able to do in print. " In the 

 meantime " I venture to hope that readers will " suspend their 

 judgment on the questions raised" by the paper of Prof. Harrison 

 and Mr. Jukes-Browne. J. W. Spencer. 



Washingtox, December 19th, 1902. 



CLASSIFICATION OF THE LOWER CHALK OF NORTH GERMANY. 



Sir, — There is a curious error in the Short Notice of Dr. A. von 

 Koenen's paper " Ueber die Gliederung der norddeutschen Unteren 

 Kreide " in your December number. The reviewer implies that 

 the result of the learned author's revised classification is to regard 

 the Aptien, Barremien, Hauterivien, and Valanginien as subdivisions 

 of the Albien ! 



We know that the German Albien is sufficiently comprehensive ; 

 but it has not yet been stretched to this extent. It is merely that 

 your reviewer, in his innocence, has been misled by finding the 

 Albien standing a little apart in its place at the head of the column 

 of ' stages ' ! G. W. Lamplugh. 



14, HtiME Street, Dublin. 



TELMATOSAURUS, NEW NAME FOR THE DINOSAUR 

 LIMNOSAVRUS. 

 Sir, — Professor G. B. Fletcher has had the great kindness to inform 

 me that the name Limnosaurus, which I proposed in 1899 for a new 



