21 



microscopes. The horns of animals, whether 

 consisting of bone, epidermic formations, or 

 those in which both were in-esent, were next 

 described and exhibited. 



July. A pa^jer on tlie Annual Excursion was read 

 by Mr. Wonfor, in which the different inci- 

 dents of the day, the places visited, the 

 objects obtained and seen, were in turn 

 described. Mr. Wonfor exhibited a number 

 of insects taken on the day, as well as speci- 

 mens of the eggs, larva}, pnp;e, and perfect 

 insects of the puss moth, the larvaj of which 

 were very abundant on the poplars in and 

 about Brighton. 



Aii[i. An evening for specimens, at which there 

 were exliibited, by Mr Peto. leaves cut by the 

 leaf-cutting bees, which had been very abund- 

 ant this summer, and then described the 

 method which the bee employs in cutting 

 the circiilar or other pieces she requii'es ; 

 by Mr Gwatkiu, some very fine examples of 

 the reddish moss-like excrescences, wholly 

 dissimilar to the leaves of the wild rose, the 

 plant on which they are formed by a Cynips, 

 and which the old naturalists deemed a 

 valuable medical substance, to which they 

 gave the name Bedguar; Mr Wonfor, who 

 had just returned from Derbyshu-e, exhibited 

 a large collection of geological specimens, 

 illustrative of the geology of that county, 

 and gave a short sketch of the rocks, which 

 are of two kinds, Ihiu-atniic and fjriMone, the 

 former is divided in the liiir,:-<t, or hard, a com- 

 pact, and partially crystalline limestone, with- 



