388 Geological and Aalronomical Societies. 



Murray, esq. F.L.S., entitled " Experiments and Observations 

 on the Lipjht and Luminous Matter of the LMinpyris noctiluca, 

 or Glow-worm." 



GEOLOGICAL SOCIETY. 



Nov. 7. — A letter was read, dated INIay 10, 1823, from 

 George Cumberland, esq. Hon. Mom. G.S., " On a Fossil of 

 the Chalk," accompanied by a u rawing. 



A letter was read, dated July 14, 1823, from George Cum- 

 berland, esq. Hon. Mem. G. S., " C)n a iieAv Species of En- 

 crinus found in the Mountain Limestone near Bristol." 



A notice was read, containing an Analysis of the Aluminite 

 of St. Helena, by ] )r. Wilkinson of Bath. Communicated 

 by Col. Wilks, M.G.S. 



On this analysis Col. Wilks observes, that there is a re- 

 markablo difference between the component parts of the alu- 

 minite of St. Helena, and the sub-sulphate of alumine found 

 at Newhaven and Halle, as given by Phillips, page 111. 



A paper was read " On the Geology of Parts of the Islands 

 of Madeira, Porto Santo, aii'l Baxo," by T. E. Bowdich, esq. 



From the investigations of Mr. Bowdich, it appears that 

 such parts of these islands as he examined, consist principally 

 of horizontal strata of limestone and sandstone, containmg 

 fossils, intersected and sometimes capped by basalt. 



Nov. 21. — An extract of a letter was read from the llev. 

 Lansdown Guilding, M.G.S., containing " An Account of a 

 Fossil found in the blue Lias at the Berkeley Canal, near Glou- 

 cester," accompanied by the fossil. 



A paper was read " On the Lias of the Coast in the Vici- 

 nity of Lyme Regis, Dorset." By H. T. De la Beche, esq. 

 F.R.S. F.L.S. and M.G.S. 



In a former communication in the first part of vol. i. second 

 sei'ies of the Society's Transactions, the author had presented 

 an outline of the geological features of the coast near Lyme 

 Regis. The present paper is intended as supplementary, and 

 the sections before published are referred to. Mr. De la Beche 

 now enters into a detailed description, illustrated by a draw- 

 ing, of the various strata composing the lias formation. 



This formation consists of about 110 feet of lias, composed 

 of more than 72 beds of limestones alternating with the same 

 number of marl beds, surmounted by about 500 feet of lias 

 marls. An account is subjoined of the various fossil shells, 

 and other organic remains found in the lias, accompanied with 

 several descriptive drawings. 



ASTRONOMICAL SOCIETY. 



Nov. 14. — This Society held its first meeting after the late 

 recess this evening. Many valuable presents of books, &c. 



