151 



The first of his papers on the Silurian rocks of the Basin of the 

 Solway saw the Hght early in 1851, in the pages of the "Journal 

 of the Geological Society," and this was quickly followed up by 

 three or four others on allied subjects, which will be found enumer- 

 ated in their chronological order in the second part of this paper. 

 Also appeared several other articles on the New Red Rocks of the 

 same district in quick succession, each one adding to the author's 

 scientific reputation, and bringing him more and more into com- 

 munication with the foremost men of science of that day. 



Amongst the numerous letters from well-known geologists now 

 in Mrs. Pearson's possession is the following note from the 

 Professor of Geology — or Reader in Geology, as he was called — 

 at Oxford, Hugh Strickland, who had just filled the post vacated 

 by the well-known Dr. Buckland. 



Tewkesbury, April 3, 1851. 

 Dear Sir, 



I am much obliged for your attention in sending me your papers on 

 Dumfriesshire. 



You seem to be working out that district in good earnest, and you will 

 doubtless extend still further our knowledge of the organic remains of the 

 Silurian Rocks, as well as of the Red Sandstone. 



I am, dear Sir, yours truly, 



H. E. STRICKLAND. 

 R. Harkness, Esq. 



The next letter is from the celebrated continental geologist, 

 Joachim Barrande, whose writings on the Older Palaeozoic Rocks 

 and fossils of Bohemia rank amongst the foremost contributions to 

 our knowledge of the geology of the older parts of the series. 



9 Juin, 1851. 



Mon cher Monsieur, 



J'ai recu par I'entr'amite de M. Salter une suite de Graptolites 

 d'Ecosse que vous avez eu la bont6 de m'envoyer. 



Je vous en remercie ; elle m'est tres agr6able et me sera aussi tres utile pour 

 6tablir des comparisons avec mes especes Boheme. Je crois que vous rendez un 

 veritable service a la science en cherchant les fossiles d'une contrge si peu connu 

 et si interessante pour les geologues. 



Je ne doute pas que vous ne d6couvriez encore, soit de nouvelles espece de 

 graptolites, soit d'autres fossiles, si vous continuez vos recherches, surtout si 



