British Association for the Advancement of Science. 309 



Capt. W. Allen, R. N, read a paper on a new construction of a 

 map of the western portion of Central Africa^ shoiving the pos" 

 sihility of the river Tchadda being the outlet of the lake Tchad. 



Capt. Beaufort, R. N. communicated a notice on the position of 

 the city of Cuzco, in Peru, by J. B. Pentland, Esq. 



Lieut. Col. Chesney, R. A. communicated a letter 071 the recent 

 ascent of the river Euphrates, by Lieut. Lynch. 



Geological excursion. Two steam boats were provided for ari 

 excursion to Tynemouth and Cullercoats. At 7 a. m. of Friday, 

 about 200 gentlemen left the quay. After breakfast, at Tyne- 

 mouth, many gentlemen and ladies from the vicinity, joined the 

 party, which then proceeded under Tynemouth Castle rock along 

 the shore to Cullercoats ; Mr. Hutton and Prof. Sedgwick acting 

 as leaders, and explaining as they advanced, every object of in- 

 terest which presented itself. The party halted repeatedly, while 

 Prof. S. directed attention to some singular phenomena there ex- 

 hibited. A more picturesque scene can hardly be imagined than 

 the Professor mounted on the beetling cliff, overhanging the vast 

 ocean, with the listening hundreds assembled around him. After 

 viewing the magnesian limestone, and associated red sandstones, 

 the wonders of the 90-fathom dike, and the marl-slate beds at 

 Whitley quarries, with their fossil fish, which had been opened 

 up for the occasion, the party returned to Newcastle, much in- 

 structed and highly delighted. 



On Saturday, the time was so limited, that instead of reading 

 the remaining papers, their authors briefly stated the most impor- 

 tant topics which they contained. 



Section D. Zoology and Botany. 



The secretary read a paper, on a species of fish having four 

 eyes, found on the coast of Surinam, by W. H. Clarke and John 

 Mortimer. There appeared to be some uncertainty as to the cor- 

 rectness of the account, and it was proposed that the matter 

 should receive farther examination. 



Mr. Babington read a paper on the Botany of the Channel 

 Islands. Mr. B. stated that 20 species of plants were found on 

 these Islands not yet noticed in England. 



Mr. J. E. Gray read a short description of a British Shell, sup- 

 posed to be new. 



