Geologiciil Socicfij of Loudon. 465 



ISIr. MacLeay remarks that those who have controverted 

 Bonnet's doctrhie of a simple series or chain of affinities, have 

 been wrong in inferring that, because the series was found not 

 to be simple, affinities "could not be continuous, and that na- 

 ture presented only unconnected groups. — Mr. MacLeay re- 

 conciles the continuity of affinities with the non-existence of a 

 simple series, by the discovery* diat two kinds of relation sub- 

 sist throughout nature,— the relation of analogy, and tJie rela- 

 tion of afinitij, — and that these are entirely distinct. Some 

 glimpses' of this truth occurred to Pallas, and recently to other 

 philosophic naturalists,— Agardh, DecandoUe, and lastly Fries, 

 — in the investigation of different departments of natin-e. The 

 subject is highly interesting, but the further consideration of it 

 would exceed our present limits. As, however, the Horce En- 

 tomologiccc is in the hands of but few persons, the greater jiart 

 of the Impression having been unfortunately destroyed in a fire, 

 we hope to give a fuller account of it at a future time. 



A second paper from Mr. Kirby was also read, being an 

 account of a new species of Eulophus (Geoffr.) ''En. damicornis 

 aureo-viridis, abdomine nigricanti, basi macula pallida subpel- 

 lucida." It is a parasitical insect, the larva of which is gre- 

 garious, and was found infesting a caterpillar resembling diat 

 of Bomhjx Camelina. 



The Society adjourned to January 21. 



GEOLOGICAL SOCIETY OF LONDON. 



Papers read at Uiis Society during the present session : 



Nov. 1, 1822. On the Geology of the Ferroe Islands; by 

 W. C. Trevelyon, Esq. 



Nov. 15. On the Geology of Hungary; by the Hon. Wm. 

 T. H. Fox Strangwavs. 



Dec. G. On Uie Geology of Arabia and some Islands in the 

 Persian Gulf; by J. B. Fraser, Esq.— Two Letters from 

 W. Hamilton, Escj. His Britannic Majesty's Minister Pleni- 

 potentiary at the Court of Naples, to Dr. Granville, giving a 

 Description of the late Eruption of Vesuvius. 



Dec. 20. On the Geology of the Vicinity of Boulogne; by 

 Dr. Fitton.— Remarks on the Order of the Strata at Stmch- 

 combe, near Durslev, made in 1821; by George Cumber- 

 land, Escj.— Letter accompanying Fossil Bones lound m the 

 Limestone Quarries at Orcston near Plymouth ; by W. Clift, 

 Esq.— Notice on a Variety of Co})per Pyrites lately found 

 in the Consolidated Mines ; by John Taylor, Esri. 



» IJorcc Enlnmoiogwa; publislicd by Uagstcr, Patornostcr-row, 181!). 

 Vol. 60. No. 296. Dec. 1822. 3 N the 



