yf * 
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, showing the pos- 
sibility of the river Tehadda being the outlet of the lake Tchad. 
Capt. Beaufort, R. N. communicated a notice on the position eo . 
the city of Cuzco, in Peru, by J. B. Pentland,, Esq. 
‘Lieut. Col. Chesney, R. A. communicated a letter on the recent 
ascent of the river Euphrates, by Lieut. Lynch. 
Geological excursion. -Two steam boats were provided for an 
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 teased: to Novrceatie; sivele in- 
structed and highly delighted. - 
‘On Saturday, the. time: was so limited, that instead of ss 
the remaining papers, their authors briefly stated the most _— 
tant topics which they contained. 
+g en D. Zoology and Botany. re 
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 2 aia 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, —- 
— see glenn 
~~ 
