in the Drift of the Valley of the Avon. 



233 



fact that in all drift specimens there exists a marked general 

 resemblance, whether these implements were designed as useful 

 tools, or destructive weapons of war, or of the chase. This typical 

 likeness is quite independant of the locality from which they are 

 derived, and applies with equal force to those obtained from the 

 furthest removed French beds and the most northern deposits of 

 this country. And yet it i3 remarkable that in spite of this family 

 likeness, certain slight but well marked individual characters exist 

 in each separate locality, and may be observed even in spots so 

 near together as Milford Hill and Bemerton ; so much is this the 

 case, that on first seeing a newly discovered specimen, the site from 

 which it was obtained has been correctly assigned to it, from this 

 circumstance alone. 



INSTRUCTIONS FOR THE 



formation of a Ptrhrim 



By Thomas Bruges Flower, M.R.C.S., F.L.S., &c, &c. 



N a previous number of this Magazine (vol. iv., p. 191), it 

 was proposed to commence the formation of a "County 

 Herbarium " for future reference and study ; resident botanists were 

 particularly invited to collect and dry for the Society, duplicates of 

 such Wiltshire plants as they could conveniently spare, in order 

 that they might be preserved and deposited in the Museum. With 

 a view therefore of carrying out the above object, and for the 

 guidance of those botanists who might feel disposed to contribute 

 plants for permanent preservation in the herbarium of the Society, 

 the following explanatory suggestions, regarding the illustration 

 and labelling of specimens have now been drawn out. 



The first object with any herbarium whether local or general, 

 should be to show the species. A fair typical specimen of each 

 species is the leading idea to be met, and it will very usually be 

 found needful to have more than one single specimen, because the 



