252 



Selections, 



[no. 6, new series, 



under sides of the wings. Trace the outline of the wings as they 

 lie on the page with a fine lead pencil, then remove them gently 

 with a camel hair brush, and cover the space within the pencil 

 mark with a coat of size ; replace the wings carefully, cover them 

 with a piece of paper and press them with a marble slab or heavy 

 weight. When dry remove the weight, and take away the skele- 

 ton of the wing, the whole of the delicate feathers will be found to 

 have adhered to the paper in their natural order. With a brush and 

 colors insert the body in the space between the wings, and give 

 if necessary, a coat of size over the whole. The effect may be much 

 enhanced by adding drawings of the larvae and pupae as well as 

 of the plants on which they are usually found. 



A collection of duplicates of many thousand specimens may in 

 this manner be preserved within a very small compass, it has 

 moreover the advantage of being indestructible by insects is very 

 convenient for reference, and, although it can never supersede the 

 cabinet, it forms a most convenient auxiliary to it. 



SELECTIONS. - 



The Royal Society. 



At the last meeting of the Society, a paper was read, entitled, An 

 Account of some recent Researches near Cairo, undertaken with the 

 view of throwing light upon the Geological History of the Alluvial 

 Land of Egypt, by L. Horner, Esq., V.P.R.S. 



This communication, which followed a previous memoir on the 

 same subject, details at considerable length the results of the ex- 

 amination of the various soils and other substances obtained by 

 numerous borings and shafts sunk in the vicinity of the statue of 

 Rameses and across the valley of the Nile, in the parallels of 

 Memphis and Heliopolis. The following are the chief facts made 

 known by the excavation shafts and borings. 



